You searched for subject:(Multi Line Brush Tire model).
Showing records 1 – 30 of
68946 total matches.
◁ [1] [2] [3] [4] [5] … [2299] ▶
KTH
1.
Conte, Francesco.
Expanding the brush tire model for energy studies.
Degree: Vehicle Dynamics, 2014, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164284 
► Considering the more and more important issues concerning the climate changes and the global warming, the automotive industry is paying more and more attention…
(more)
▼ Considering the more and more important issues concerning the climate changes and the global warming, the automotive industry is paying more and more attention to vehicle concepts with full electric or partly electric propulsion systems. The introduction of electric power sources allow the designers to implement more advanced motion control systems in vehicle, such as active suspensions. An example of this concept is the Autonomous corner module (ACM), designed by S. Zetterström. The ACM is a modular based suspension system that includes all features of wheel control, such as control of steering, wheel torque and camber individually, using electric actuators. With a good control strategy it is believed that is it possible to reduce the fuel consumption and/or increase the handling properties of the vehicle. In particular, camber angle has a significant effect on vehicle handling. However, very few efforts have been done in order to analyse its effects on tire dissipated energy. The aim of this study is to develop a new tire model, having as starting point the simple Brush Tire model, in order to analyse the tire behaviour, in terms of forces generated and energy dissipated, for different dynamic situations. In order to reach this scope, the characteristic equations of the rubber material are implemented in a 3D Multi-Line brush tire model. In this way the energy dissipated, thus the rolling resistance force, can be studied and analysed, considering also the tire geometry. From the results of this work it is possible to assert that the angular parameters (e.g. camber angle) affect the power losses in rolling tires, as well as the tire geometry influences their rolling resistance. Thus, using a good control strategy, it is possible to reduce the power losses in tires.
Subjects/Keywords: Multi-Line Brush Tire model; Masing model; rolling resistance
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Conte, F. (2014). Expanding the brush tire model for energy studies. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164284
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Conte, Francesco. “Expanding the brush tire model for energy studies.” 2014. Thesis, KTH. Accessed January 16, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164284.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Conte, Francesco. “Expanding the brush tire model for energy studies.” 2014. Web. 16 Jan 2021.
Vancouver:
Conte F. Expanding the brush tire model for energy studies. [Internet] [Thesis]. KTH; 2014. [cited 2021 Jan 16].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164284.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Conte F. Expanding the brush tire model for energy studies. [Thesis]. KTH; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164284
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
2.
Jones, Logan.
Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway.
Degree: Docteur es, Mathématiques appliquées et systèmes industriels, 2012, Toulouse, ISAE
URL: http://www.theses.fr/2012ESAE0019
► Lorsqu’un avion atterrit, la force principale nécessaire pour arrêter l’avion est obtenue par le freinage. Par une réduction de la vitesse de rotation des roues,…
(more)
▼ Lorsqu’un avion atterrit, la force principale nécessaire pour arrêter l’avion est obtenue par le freinage. Par une réduction de la vitesse de rotation des roues, les freins provoquent une vitesse de glissement entre les pneus et la piste. C’est cette différence de vitesse qui génère la force de freinage capable de stopper l’avion. La modélisation de cette force est essentielle pour l’estimation de la longueur de piste à l’atterrissage. Les modèles classiques utilisés par les avionneurs sont assez simplistes et dérivent expérimentalement des modèles de frictions les plus simples. De sorte que ces modèles sont dans l’incapacité d’estimer l’influence de paramètres clefs influençant la force de freinage. Il s’agit, en particulier de la pression des pneus, de la nature de la gomme, de la température ambiante et de celle de la gomme, de l’état de la piste, de sa texture, etc. L’objectif de la thèse a été de développer un modèle de contact pneu-piste capable d’estimer la force de freinage. C’est le « Brush Model » qui a servi de base à cette modélisation. En phase de freinage la zone de contact est constituée d’une première zone de déformation de la gomme qui crée une force résistante en suivant la loi de Hooke, puis d’une seconde zone de glissement dont la force de résistance suit la loi de Coulomb. Ce modèle a été amélioré grâce aux résultats de la mécanique des structures pour la loi de Hooke et grâce aux résultats de la tribologie pour la loi de Coulomb. Ces deux modélisations faisant appel aux données issues de la science des matériaux. L’ensemble de ces modélisations a été enrichi par une coopération avec plusieurs centres de recherches ayant fourni de nombreux résultats expérimentaux. Le modèle obtenu a ensuite été confronté avec des résultats d’essais en vol obtenus avec « Airbus Operations S.A.S ». La thèse a validé le prétraitement des données d’essais ainsi que le processus d’identification qui a permis de montrer l’accord du modèle avec les résultats expérimentaux obtenus lors des essais en vol. Cette modélisation donne des résultats très encourageants, elle permet une compréhension beaucoup plus approfondie des effets de l’environnement sur les forces de freinage. De sorte que cette thèse a permis d’améliorer très sensiblement la compréhension fondamentale des phénomènes en jeu lors du freinage, au contact entre le pneu et la piste. Chez Airbus, les résultats obtenus vont servir de base pour les travaux à venir sur ce thème.
As an aircraft lands on a runway, the principal force acting to stop the aircraft within the confines of the runway is generated by the brakes. The brakes cause the tire’s rotational speed to slow down with regards to the aircraft’s speed over the ground. This difference in speed causes friction and it is this friction that is the principal force to stop the aircraft. In order to be able to estimate the stopping distance of an aircraft an understanding of this friction is essential. Traditionally, aircraft manufactures have relied on simplistic, empirically derived friction models.…
Advisors/Committee Members: Bes, Christian (thesis director), Boiffier, Jean-Luc (thesis director).
Subjects/Keywords: Frottement; Pneu; Piste; Brush model; Avion; Caoutchouc; Taux de glissement; Coulomb; Friction; Runway; Tire; Brush Model; Aircraft; Tribology; Rubber; Anti-skid; Slip ratio; Coulomb; 629.4
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jones, L. (2012). Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway. (Doctoral Dissertation). Toulouse, ISAE. Retrieved from http://www.theses.fr/2012ESAE0019
Chicago Manual of Style (16th Edition):
Jones, Logan. “Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway.” 2012. Doctoral Dissertation, Toulouse, ISAE. Accessed January 16, 2021.
http://www.theses.fr/2012ESAE0019.
MLA Handbook (7th Edition):
Jones, Logan. “Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway.” 2012. Web. 16 Jan 2021.
Vancouver:
Jones L. Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway. [Internet] [Doctoral dissertation]. Toulouse, ISAE; 2012. [cited 2021 Jan 16].
Available from: http://www.theses.fr/2012ESAE0019.
Council of Science Editors:
Jones L. Modélisation des forces de contact entre le pneu d’un avion et la piste : Modeling the contact forces between an aircraft tire and the runway. [Doctoral Dissertation]. Toulouse, ISAE; 2012. Available from: http://www.theses.fr/2012ESAE0019
Ohio University
3.
Bhave, Tejas N.
Effect of Material Nonlinearity on Rubber Friction.
Degree: MS, Mechanial and Systems Engineering (Engineering and
Technology), 2016, Ohio University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou14798628516789
► With the increase in the importance of vehicular transportation, the study of contact patch parameters including the contact patch forces and the tire-road friction has…
(more)
▼ With the increase in the importance of vehicular
transportation, the study of contact patch parameters including the
contact patch forces and the
tire-road friction has become
essential from the perspective of improving vehicle safety as well
as vehicle performance. The current work aims at analyzing the
effect of the nonlinear elastic and nonlinear viscoelastic nature
of
tire tread rubber by modifying two commonly used rubber friction
models (Gim's analytical
model and Heinrich-Klüppel (HK) friction
model) in order to implement the nonlinear elasticity and the
nonlinear viscoelasticity of rubber. Gim’s analytical
model is
modified by changing the linear elastic constitutive equation used
in the original
model to a nonlinear elastic equation based on the
strain energy density of rubber. Results are obtained for a test
simulation using this modified
model and an experimental method is
proposed to validate the modified model’s force predictions. The HK
friction
model computes the hysteretic sliding friction coefficient
of rubber based on the viscoelastic modulus. It however, does not
consider the (experimentally proven) dependence of viscoelastic
modulus of rubber on the applied strain amplitude and temperature.
The current work thus aims at implementing this dependence and
modifying the classical HK friction
model. A test simulation run
for a rubber block sliding on a rough surface using the modified HK
friction
model yielded friction results that are sensitive to the
input strain amplitude and temperature.
Advisors/Committee Members: Sarvestani, Alireza (Advisor).
Subjects/Keywords: Mechanical Engineering; Automotive Materials; Materials Science; Friction; rubber; tire-road friction; brush model; rubber viscoelasticity; hysteresis friction modelling; Payne effect
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bhave, T. N. (2016). Effect of Material Nonlinearity on Rubber Friction. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou14798628516789
Chicago Manual of Style (16th Edition):
Bhave, Tejas N. “Effect of Material Nonlinearity on Rubber Friction.” 2016. Masters Thesis, Ohio University. Accessed January 16, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou14798628516789.
MLA Handbook (7th Edition):
Bhave, Tejas N. “Effect of Material Nonlinearity on Rubber Friction.” 2016. Web. 16 Jan 2021.
Vancouver:
Bhave TN. Effect of Material Nonlinearity on Rubber Friction. [Internet] [Masters thesis]. Ohio University; 2016. [cited 2021 Jan 16].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou14798628516789.
Council of Science Editors:
Bhave TN. Effect of Material Nonlinearity on Rubber Friction. [Masters Thesis]. Ohio University; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou14798628516789
Texas Tech University
4.
-4916-9638.
In-plane and out-of-plane flexible ring tire model development and validation.
Degree: PhD, Mechanical Engineering, 2018, Texas Tech University
URL: http://hdl.handle.net/2346/74416
► With the development of the computational technology, vehicle dynamics simulation has become a powerful tool for vehicle design in automotive industry nowadays. Since the tire…
(more)
▼ With the development of the computational technology, vehicle dynamics simulation has become a powerful tool for vehicle design in automotive industry nowadays. Since the
tire plays a crucial role in vehicle handling, ride comfort, and durability, an accurate and efficient
tire model becomes the prerequisite for the reliability and effectiveness of various vehicle dynamic simulations.
In this dissertation, first an in-plane flexible ring
tire model which is mainly used for straight
line ride comfort and durability analysis is proposed. The
model consists of a rigid rim, a certain number of discretized lumped mass belt points and massless tread blocks attached on the belt. Various virtual in-plane cleat tests according to the commercial ADAMS® FTire are conducted for parameter identification and validation of this in-plane
tire model.
The in-plane flexible ring
tire model is further extended to a 3D out-of-plane
tire model with a broader range of applications. The parameters in the 3D out-of-plane
tire model are divided into in-plane
tire parameters and out-of-plane
tire parameters. Within the 3D
tire model the values of the in-plane
tire parameters are borrowed directly from the in-plane
tire model, and the out-of-plane
tire parameters are identified based on certain out-of-plane cleat tests. Various ADAMS® FTire driving/braking, cornering and cleat tests are conducted to validate the proposed 3D out-of-plane
tire model.
Besides, several important topics regarding to the flexible ring
tire model, including the
tire model efficiency,
tire parameter sensitivity, robustness of the parameter identification procedure, and the relation between the
tire parameters and
tire model discretization, are also investigated in this dissertation.
Advisors/Committee Members: Barhorst, Alan (committee member), Ren, Beibei (committee member), Ekwaro-Osire, Stephen (committee member), Chen, Xinzhong (committee member), Yang, Xiaobo (committee member), Yang, James (Committee Chair).
Subjects/Keywords: Flexible Ring Tire Model; Tire Model Parameter Identification; Tire Model Validation; Tire Dynamics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-4916-9638. (2018). In-plane and out-of-plane flexible ring tire model development and validation. (Doctoral Dissertation). Texas Tech University. Retrieved from http://hdl.handle.net/2346/74416
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-4916-9638. “In-plane and out-of-plane flexible ring tire model development and validation.” 2018. Doctoral Dissertation, Texas Tech University. Accessed January 16, 2021.
http://hdl.handle.net/2346/74416.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-4916-9638. “In-plane and out-of-plane flexible ring tire model development and validation.” 2018. Web. 16 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-4916-9638. In-plane and out-of-plane flexible ring tire model development and validation. [Internet] [Doctoral dissertation]. Texas Tech University; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/2346/74416.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-4916-9638. In-plane and out-of-plane flexible ring tire model development and validation. [Doctoral Dissertation]. Texas Tech University; 2018. Available from: http://hdl.handle.net/2346/74416
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
University of Waterloo
5.
Spike, Jonathan.
Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.
Degree: 2013, University of Waterloo
URL: http://hdl.handle.net/10012/7983
► As vehicle dynamics research delves deeper into better insights in performance, modeling, and vehicle controls, one area remains of utmost importance: tire and road friction…
(more)
▼ As vehicle dynamics research delves deeper into better insights in performance, modeling, and vehicle controls, one area remains of utmost importance: tire and road friction forces. The vehicle’s interaction with the road remains the dominant mean of vehicle control. Ultimately, the tire-road interaction will determine the majority of the vehicle’s capabilities and as the understanding of the interface improves, so too can the performance.
With more computationally intensive systems being instrumented into modern vehicle systems, one is able to observe a great deal of important vehicle states directly for the remaining vehicle information; excellent estimation techniques are providing the rest of the insights. This study looks at the possible improvements that can be observed by implementing an adaptive dynamic tire model that is physical and flexible enough to permit time varying tire performance. The tire model selected is the Average Lumped LuGre Friction Tire Model, which was originally developed from physical properties of friction and tire systems.
The material presented here examines the possibility of an adaptive tire model, which can be implemented on a real-time vehicle platform. The adaptive tire model is just one section of an entire control strategy that is being developed by General Motors in partnership with the University of Waterloo. The approach allows for estimated and measured vehicle information to provide input excitation for the tire model when driven with real-world conditions that enabling tire estimations. The tire model would then provide the controller information indicating the expected tire capacity and compares it with the instantaneous loading. The adaptive tire model has been tested with flat road experimental cases and the results provided reasonable estimates. The experimentation was performed with a fully instrumented research vehicle that used in-wheel force transducers, and later repeated with a completely different non-instrumented fully electric vehicle.
The concepts and investigation presented here has initiated the ground work for a real-time implementation of a full adaptive tire model. Further work is still required to evaluate the influence of a range of operating conditions, tire pressure, and of different tire types. However, the findings indicate that this approach can produce reasonable results for the specified conditions examined.
Subjects/Keywords: Vehicle Dynamics; Vehicle Tire Estimation; Vehicle Tire Forces; Tire Model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Spike, J. (2013). Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/7983
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Spike, Jonathan. “Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.” 2013. Thesis, University of Waterloo. Accessed January 16, 2021.
http://hdl.handle.net/10012/7983.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Spike, Jonathan. “Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.” 2013. Web. 16 Jan 2021.
Vancouver:
Spike J. Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. [Internet] [Thesis]. University of Waterloo; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10012/7983.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Spike J. Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. [Thesis]. University of Waterloo; 2013. Available from: http://hdl.handle.net/10012/7983
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Kentucky
6.
Ladd, Scott E.
SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING.
Degree: 2013, University of Kentucky
URL: https://uknowledge.uky.edu/ms_etds/4
► Conventionally, the focus during supplier evaluation has been to assess cost, quality and delivery effectiveness due to their impact on profitability. In recent years, there…
(more)
▼ Conventionally, the focus during supplier evaluation has been to assess cost, quality and delivery effectiveness due to their impact on profitability. In recent years, there has been increased emphasis on promoting more sustainable business practices that focus on reducing environmental impact and improve societal well-being, in addition to economic benefits. However, most of the existing supplier evaluation methods in literature as well as those used by leading companies fall short of comprehensively assessing suppliers from a Triple Bottom Line (TBL) perspective. TBL defined as holistically looking at the economic, environmental, and societal aspects of an entity. This paper presents a review and selection of metrics for economic, environmental and societal sustainability evaluation. In addition, this work proposes a methodology for combining the scores into a comprehensive score that can be used to compare two entities performance relative to the TBL.
Subjects/Keywords: Sustainability; Supplier Selection; Triple Bottom Line; Multi Attribute Utility Model; Triple Bottom Line Metrics; Manufacturing
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ladd, S. E. (2013). SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING. (Masters Thesis). University of Kentucky. Retrieved from https://uknowledge.uky.edu/ms_etds/4
Chicago Manual of Style (16th Edition):
Ladd, Scott E. “SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING.” 2013. Masters Thesis, University of Kentucky. Accessed January 16, 2021.
https://uknowledge.uky.edu/ms_etds/4.
MLA Handbook (7th Edition):
Ladd, Scott E. “SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING.” 2013. Web. 16 Jan 2021.
Vancouver:
Ladd SE. SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING. [Internet] [Masters thesis]. University of Kentucky; 2013. [cited 2021 Jan 16].
Available from: https://uknowledge.uky.edu/ms_etds/4.
Council of Science Editors:
Ladd SE. SUPPLIER SUSTAINABILITY EVALUATION UTILIZING MULTI ATTRIBUTE UTILITY MODELING. [Masters Thesis]. University of Kentucky; 2013. Available from: https://uknowledge.uky.edu/ms_etds/4
Virginia Tech
7.
Peterson, Eric W.
Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model.
Degree: MS, Mechanical Engineering, 2014, Virginia Tech
URL: http://hdl.handle.net/10919/51148
► The interaction between a tire and road surface is of critical importance as the motion of a car in both transient and steady-state maneuvers is…
(more)
▼ The interaction between a
tire and road surface is of critical importance as the motion of a car in both transient and steady-state maneuvers is predicated on the friction forces generated at the
tire-road interface. A general method for predicting friction coefficients for an arbitrary asphalt pavement surface would be an invaluable engineering tool for designing many vehicle safety and performance features,
tire design, and improving asphalt-aggregate mixtures used for pavement surfaces by manipulating texture. General, physics-based methods for predicting friction are incredibly difficult, if not impossible to realize—However, for the specific case of rubber sliding across a rough surface, the primary physical mechanisms responsible for friction, notably rubber hysteresis, can be modeled.
The objective of the subsequent research is to investigate one such physics
model, referred to as Persson Theory, and implement the constitutive equations into a MatLab® code to be solved numerically. The
model uses high-resolution surface measurements, along with some of the physical properties of rubber as inputs and outputs the kinetic friction coefficient. The Persson
model was successfully implemented into MatLab® and high resolution measurements (from optical microscopy and imaging software) were obtained for a variety of surfaces. Friction coefficients were calculated for each surface and compared with measured friction values obtained from British Pendulum testing. The accuracy and feasibility of the Persson
model are discussed and results are compared with a simpler, semi-empirical indenter
model. A brief discussion of the merits and drawbacks of the Persson
model are offered along with recommendations for future research based on the information acquired from the present study.
Advisors/Committee Members: Taheri, Saied (committeechair), Sandu, Corina (committee member), Furukawa, Tomonari (committee member).
Subjects/Keywords: Tire; Friction; Persson Model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Peterson, E. W. (2014). Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/51148
Chicago Manual of Style (16th Edition):
Peterson, Eric W. “Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model.” 2014. Masters Thesis, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/51148.
MLA Handbook (7th Edition):
Peterson, Eric W. “Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model.” 2014. Web. 16 Jan 2021.
Vancouver:
Peterson EW. Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model. [Internet] [Masters thesis]. Virginia Tech; 2014. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/51148.
Council of Science Editors:
Peterson EW. Tire-Road Friction Coefficient Estimation Using a Multi-scale, Physics-based Model. [Masters Thesis]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/51148
Virginia Tech
8.
Umsrithong, Anake.
Deterministic and Stochastic Semi-Empirical Transient Tire Models.
Degree: PhD, Mechanical Engineering, 2012, Virginia Tech
URL: http://hdl.handle.net/10919/26270
► The tire is one of the most important components of the vehicle. It has many functions, such as supporting the load of the vehicle, transmitting…
(more)
▼ The
tire is one of the most important components of the vehicle. It has many functions, such as supporting the load of the vehicle, transmitting the forces which drive, brake and guide the vehicle, and acting as the secondary suspension to absorb the effect of road irregularities before transmitting the forces to the vehicle suspension. A
tire is a complex reinforced rubber composite air container. The structure of the
tire is very complex. It consists of several layers of synthetic polymer, many flexible filaments of high modulus cord, and glass fiber, which are bonded to a matrix of low modulus polymeric material. As the
tire is the only component of the vehicle which makes contact with the road surface, almost all forces and moments acting on the vehicle must be transferred by the
tire. To predict the dynamics of the vehicle, we need to know these forces and moments generated at the
tire contact patch. Therefore,
tire models that accurately describe this dynamic behavior are needed for vehicle dynamic simulation. Many researchers developed
tire models for vehicle dynamic simulations; however, most of the development in
tire modeling has been limited to deterministic steady-state on-road
tire models.
The research conducted in this study is concerned with the development of semi-empirical transient
tire models for on-road and off-road vehicle simulations. The semi-empirical transient
tire model is developed based on existed
tire models, analytical
tire structure mechanics analysis, and experimental data collected by various researchers. The
tire models were developed for vehicle traction, handling and ride analysis. The theoretical mechanics analysis of the
tire model focused on the determination of
tire and terrain deformation. Then, the results are used together with empirical data to calculate the force response and the moment response. Moreover, the influence of parametric uncertainties in
tire parameters on the
tire-terrain interaction is investigated. The parametric uncertainties are quantified and propagated through the
tire models using a polynomial chaos theory with a collocation approach. To illustrate the capabilities of the
tire models developed, both deterministic and stochastic
tire models are simulated for various scenarios and maneuvers. Numerically simulated results are analyzed from the perspective of vehicle dynamics. Such an analysis can be used in
tire and vehicle development and design.
Advisors/Committee Members: Sandu, Corina (committeechair), Ferris, John B. (committee member), Chan, Brendan Juin-Yih (committee member), Sandu, Adrian (committee member), Taheri, Saied (committee member).
Subjects/Keywords: tire model; uncertainties; vehicle dynamics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Umsrithong, A. (2012). Deterministic and Stochastic Semi-Empirical Transient Tire Models. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26270
Chicago Manual of Style (16th Edition):
Umsrithong, Anake. “Deterministic and Stochastic Semi-Empirical Transient Tire Models.” 2012. Doctoral Dissertation, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/26270.
MLA Handbook (7th Edition):
Umsrithong, Anake. “Deterministic and Stochastic Semi-Empirical Transient Tire Models.” 2012. Web. 16 Jan 2021.
Vancouver:
Umsrithong A. Deterministic and Stochastic Semi-Empirical Transient Tire Models. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/26270.
Council of Science Editors:
Umsrithong A. Deterministic and Stochastic Semi-Empirical Transient Tire Models. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/26270
University of Lund
9.
Svendenius, Jacob.
Tire Modeling and Friction Estimation.
Degree: 2007, University of Lund
URL: https://lup.lub.lu.se/record/27003
;
https://portal.research.lu.se/ws/files/4401399/27004.pdf
► New system technologies are continuously improving the performance of vehicles regarding comfort, stability, environmental stresses, and safety. Novel sensors are developed and used together with…
(more)
▼ New system technologies are continuously improving
the performance of vehicles regarding comfort, stability,
environmental stresses, and safety. Novel sensors are developed and
used together with advanced control algorithms and faster and more
accurate actuators to help the driver to maneuver the vehicle in a
safer way. The physical traction limit set by the friction between
the tires and the road can, however, not be overridden. The
behavior of tires is, therefore, an important issue since it
determines the possibilities to control the vehicle. One essential
task for the vehicle control system is to be able to fully utilize
these limits. Another is to assist the driver to choose an adequate
driving style, adapted to the actual conditions. A method to derive
the tire forces for simultaneous braking, cornering and camber, by
combining empirical models for the pure behavior of each of
respective action is presented in the thesis. The method is based
on the physical foundation brought by the simple, but well-suited
brush model theory. The pure-slip tire models can be given as
empirical models or as raw tabular data. The implementation is
verified to be well-working and computationally sound and good
results are obtained in validation with the available empirical
data. A new type of on board brush-model based friction-estimator
using the local measurements on the vehicle is also proposed. A
major invention is the way of collecting the measurements into
bins, such that the available data used for optimization is evenly
weighted along the force and slip axis. Experimental data has been
collected and evaluated to ensure the validity of the brush model
during certain conditions. The estimator has been implemented and
validated on a personal car. The wheel speed signal is an essential
signal in many system applications. Based on problems observed
during performed measurements, a few ways to reduce the noise on
the signal, without adding any phase shift or time delay, are
discussed in the thesis.
Subjects/Keywords: Control Engineering; Technological sciences; Vehicle Dynamics; Wheel Speed; Brush Model; Combined Slip; Tire Models; Teknik; Friction Estimation
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Svendenius, J. (2007). Tire Modeling and Friction Estimation. (Doctoral Dissertation). University of Lund. Retrieved from https://lup.lub.lu.se/record/27003 ; https://portal.research.lu.se/ws/files/4401399/27004.pdf
Chicago Manual of Style (16th Edition):
Svendenius, Jacob. “Tire Modeling and Friction Estimation.” 2007. Doctoral Dissertation, University of Lund. Accessed January 16, 2021.
https://lup.lub.lu.se/record/27003 ; https://portal.research.lu.se/ws/files/4401399/27004.pdf.
MLA Handbook (7th Edition):
Svendenius, Jacob. “Tire Modeling and Friction Estimation.” 2007. Web. 16 Jan 2021.
Vancouver:
Svendenius J. Tire Modeling and Friction Estimation. [Internet] [Doctoral dissertation]. University of Lund; 2007. [cited 2021 Jan 16].
Available from: https://lup.lub.lu.se/record/27003 ; https://portal.research.lu.se/ws/files/4401399/27004.pdf.
Council of Science Editors:
Svendenius J. Tire Modeling and Friction Estimation. [Doctoral Dissertation]. University of Lund; 2007. Available from: https://lup.lub.lu.se/record/27003 ; https://portal.research.lu.se/ws/files/4401399/27004.pdf
Clemson University
10.
Lewis, Timothy.
Development of a Two-dimensional Model of a Pneumatic Tire.
Degree: MS, Mechanical Engineering, 2012, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/1539
► The pneumatic tire has been studied extensively since its invention in 1888. With the advent of high-powered computers and the use of the finite…
(more)
▼ The pneumatic
tire has been studied extensively since its invention in 1888. With the advent of high-powered computers and the use of the finite element method, the understanding of the
tire's complex non-linear behavior has grown tremendously. However, one weakness of finite element models is that parameter studies are difficult and time consuming to perform. In contrast, an analytical
model can quickly and easily perform extensive parameter studies. To the knowledge of the author, all existing analytical models of the
tire make assumptions concerning the
tire's behavior and construction that while useful for obtaining some of the first-order characteristics, are limited since they cannot relate
tire behavior such as force-deflection to individual
tire stiffnesses. As such, an adequate two-dimensional
model of a pneumatic
tire, including a finite element
model, does not exist. Therefore, an analytical, two-dimensional
model for a pneumatic
tire in static contact with a rigid surface is developed and presented. The case of a non-pneumatic
tire can be obtained as a special case. The quasi-static investigation concentrates on finding the relationships between the
tire's size and stiffness and its deformation under loading. A total of seven stiffness parameters are accounted for. The belt of the
tire is modeled using curved beam theory, developed by Gasmi, et al. (2011), which accounts for bending (EI), shearing (GA), and extensional (EA) deformations. The sidewall of the
tire is modeled as a bi-linear spring (K
rT, K
rC) with pre-tensioning (F
P*) in the radial direction and a linear torsional spring (K
θ) in the circumferential direction. Application of virtual work leads to a set of 6th order differential equations for the displacements in the belt that must be solved in three distinct regions. The first region is the region where the radial deformation is greater than the radial deformation of the inflated and unloaded
tire. The second region is the region where the radial deformation of the sidewall is less than the inflated position but not in contact with the ground, and the third region is defined to be the region in contact with the ground. The length of the contact patch is represented by the angle enclosed by the edges of contact, and analytical expressions of stress resultants and displacements at the centroids of cross-sections are expressed in terms of this angle. In order to improve the accuracy of the
model for large deformations, a special inflation pressure was calculated that allowed the most accurate solution to the linear
model to be obtained by minimizing the circumferential force in the region of the largest rotation of the curved beam. This solution was then modified to account for the true inflation pressure. This two-step solution procedure was validated with a geometrically nonlinear finite element
model of a non-pneumatic
tire. Force vs. deflection and force vs. counter deflection results were compared to experimental data for a…
Advisors/Committee Members: Joseph, Paul F, Rhyne , Timothy B, Li , Gang.
Subjects/Keywords: Analytical 2D Model; Pneumatic Tire; Tire Behavior; Mechanical Engineering
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lewis, T. (2012). Development of a Two-dimensional Model of a Pneumatic Tire. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/1539
Chicago Manual of Style (16th Edition):
Lewis, Timothy. “Development of a Two-dimensional Model of a Pneumatic Tire.” 2012. Masters Thesis, Clemson University. Accessed January 16, 2021.
https://tigerprints.clemson.edu/all_theses/1539.
MLA Handbook (7th Edition):
Lewis, Timothy. “Development of a Two-dimensional Model of a Pneumatic Tire.” 2012. Web. 16 Jan 2021.
Vancouver:
Lewis T. Development of a Two-dimensional Model of a Pneumatic Tire. [Internet] [Masters thesis]. Clemson University; 2012. [cited 2021 Jan 16].
Available from: https://tigerprints.clemson.edu/all_theses/1539.
Council of Science Editors:
Lewis T. Development of a Two-dimensional Model of a Pneumatic Tire. [Masters Thesis]. Clemson University; 2012. Available from: https://tigerprints.clemson.edu/all_theses/1539
University of Illinois – Urbana-Champaign
11.
Sheikh, Zuhaib B.
Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits.
Degree: MS, 1200, 2011, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/18390
► Presented here is an alternative methodology to the development of transmission line models for multi-conductor interconnects in high speed integrated circuits. The methodology starts with…
(more)
▼ Presented here is an alternative methodology to the development of transmission
line models for
multi-conductor interconnects in high speed integrated circuits. The methodology starts with the assumption that per unit length (p.u.l.) transmission
line parameters ??? i.e. p.u.l. resistance R, inductance L, capacitance C, and conductance G ??? have been extracted using a two-dimensional RLCG extractor. The methodology relies upon a rational fitting algorithm called VECTFIT to express the parameters as a rational function expression, a form suitable for equivalent circuit generation using a commercial circuit simulator like HSPICE. The methodology has been numerically verified and implemented in the form of some select interconnecting scenarios for typical on-chip applications. The new methodology has also been compared with the previous methodology for robustness, accuracy and computational efficacy.
Advisors/Committee Members: Cangellaris, Andreas C. (advisor).
Subjects/Keywords: Transmission Line Model; Multi-conductor Interconnects; Two-dimensional RLCG extractor; Rational Fitting Algorithm; VECTFIT; HSPICE
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sheikh, Z. B. (2011). Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/18390
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sheikh, Zuhaib B. “Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits.” 2011. Thesis, University of Illinois – Urbana-Champaign. Accessed January 16, 2021.
http://hdl.handle.net/2142/18390.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sheikh, Zuhaib B. “Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits.” 2011. Web. 16 Jan 2021.
Vancouver:
Sheikh ZB. Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2011. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/2142/18390.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sheikh ZB. Numerical Modeling of Multi-Conductor Interconnects for High Speed Integrated Circuits. [Thesis]. University of Illinois – Urbana-Champaign; 2011. Available from: http://hdl.handle.net/2142/18390
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
12.
Ma, Rui.
Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model.
Degree: PhD, Mechanical Engineering, 2013, Virginia Tech
URL: http://hdl.handle.net/10919/23896
► The vertical force generated from terrain-tire interaction has long been of interest for vehicle dynamic simulations and chassis development. As the terrain serves as the…
(more)
▼ The vertical force generated from terrain-
tire interaction has long been of interest for vehicle dynamic simulations and chassis development. As the terrain serves as the main excitation to the suspension system through pneumatic
tire, proper terrain and
tire models are required to produce reliable vehicle response. Due to the high complexity of the
tire structure and the immense size of a high fidelity terrain profile, it is not efficient to calculate the terrain-
tire interaction at every location. The use of a simpler
tire model (e.g. point follower
tire model) and a pre-filtered terrain profile as equivalent input will considerably reduce the simulation time. The desired produced responses would be nearly identical to the ones using a complex
tire model and unfiltered terrain, with a significant computational efficiency improvement.
In this work, a terrain pre-filtering technique is developed to improve simulation efficiency while still providing reliable load prediction. The work is divided into three parts. First a stochastic gridding method is developed to include the measurement uncertainties in the gridded terrain profile used as input to the vehicle simulation. The obtained uniformly spaced terrain is considered probabilistic, with a series of gridding nodes with heights represented by random variables. Next, a constraint mode
tire model is proposed to emulate the
tire radial displacement and the corresponding force given the terrain excitation. Finally, based on the constraint mode
tire model, the pre-filtering technique is developed. At each location along the
tire's path, the
tire center height is adjusted until the spindle load reaches a pre-designated constant load. The resultant
tire center trajectory is the pre-filtered terrain profile and serves as an equivalent input to the simple
tire model. The vehicle response produced by using the pre-filtered terrain profile and the simple
tire model is analyzed for accuracy assessment. The computational efficiency improvement is also examined. The effectiveness of the pre-filtering technique is validated on probabilistic terrain by using different realizations of terrain profiles. It is shown through multiple profiles that the computational efficiency can be improved by three orders of magnitude with no statistically significant change in resulting loading.
Advisors/Committee Members: Ferris, John B. (committeechair), Taheri, Saied (committee member), Hendricks, Scott L. (committee member), West, Robert L. (committee member), Sandu, Corina (committee member).
Subjects/Keywords: Terrain; Gridding; Stochastic; Tire Model; Pre-filtering
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ma, R. (2013). Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23896
Chicago Manual of Style (16th Edition):
Ma, Rui. “Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model.” 2013. Doctoral Dissertation, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/23896.
MLA Handbook (7th Edition):
Ma, Rui. “Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model.” 2013. Web. 16 Jan 2021.
Vancouver:
Ma R. Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/23896.
Council of Science Editors:
Ma R. Development of a Terrain Pre-filtering Technique applicable to Probabilistic Terrain using Constraint Mode Tire Model. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23896
Clemson University
13.
Frey, Norm.
DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS.
Degree: MS, Mechanical Engineering, 2009, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/615
► One vehicle subassembly that is of great importance to automobile manufacturers for tuning final vehicle performance is the pneumatic tire. Pneumatic tires present themselves as…
(more)
▼ One vehicle subassembly that is of great importance to automobile manufacturers for tuning final vehicle performance is the pneumatic
tire. Pneumatic tires present themselves as unique tuning tools as they 1) are the sole link between the roadway surface and the integrated vehicle suspension, chassis and steering systems, and 2) provide a wide range of tunability over many vehicle performances, including handling (steering feel as well as chassis dynamics), traction (braking, driving, and cornering), and ride comfort (roadway isolation). Therefore the vehicle manufacturing industry continues to research and refine various aspects of
tire modeling to improve up-front integrated
tire/vehicle CAE/CAD
model fidelity over a wide range of operating conditions. Because tires are highly complex, nonlinear, viscous-elastic composite structures they prove to be difficult to accurately
model over their entire operating range. As a result, vehicle and
tire manufacturers continue to work with relatively simple models that adequately represent the
tire for the integrated vehicle performance over an operating regime of interest. This paper evaluates several simple
tire models in order to compare their relative advantages and applicability. One of the
tire models being compared is a new embodiment in MatLab Simulink of a rigid ring
tire model designed for ride comfort modeling of low-frequency and moderate amplitude roadway inputs, and whose data file is capable of being populated quickly using inexpensive standardized laboratory test methods. In addition to the aforementioned
tire models, several iterations of an F-
Tire tire
model are interfaced with Intec's SIMPACK
multi-body simulation software as an industry reference.
Advisors/Committee Members: Law, E. H., Haque , Imtiaz-ul, Rhyne , Timothy.
Subjects/Keywords: Multi-Body Simulation; Ride Comfort; Rigid Ring; Tire Model; Engineering Mechanics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Frey, N. (2009). DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/615
Chicago Manual of Style (16th Edition):
Frey, Norm. “DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS.” 2009. Masters Thesis, Clemson University. Accessed January 16, 2021.
https://tigerprints.clemson.edu/all_theses/615.
MLA Handbook (7th Edition):
Frey, Norm. “DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS.” 2009. Web. 16 Jan 2021.
Vancouver:
Frey N. DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS. [Internet] [Masters thesis]. Clemson University; 2009. [cited 2021 Jan 16].
Available from: https://tigerprints.clemson.edu/all_theses/615.
Council of Science Editors:
Frey N. DEVELOPMENT OF A RIGID RING TIRE MODEL AND COMPARISON AMONG VARIOUS TIRE MODELS FOR RIDE COMFORT SIMULATIONS. [Masters Thesis]. Clemson University; 2009. Available from: https://tigerprints.clemson.edu/all_theses/615
KTH
14.
Wangs, Taozhi.
Analysis on Tyre Wear : Modelling and Simulations.
Degree: Vehicle Dynamics, 2017, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271256
► The tyre is an essential part of a road vehicle. It is in the contact between road and tyre that the forces that create…
(more)
▼ The tyre is an essential part of a road vehicle. It is in the contact between road and tyre that the forces that create the possibility for the driver to control the vehicle are generated. Tyres, however, wear down, which leads to both unhealthy wear particles and disposal of old tyres, both of which are harmful to the environment. If one could learn more about what causes wear, it might be possible to reduce tyre wear, which would be beneficial from both an economic and an ecological point of view. The aim of this thesis work is to develop a tyre model that can simulate tyre wear and take temperature, pressure and vehicle settings into account. Based on tyre brush theory, a tyre wear model has been developed which includes a thermal model, a pressure model and a friction model. Simulations and analysis of different cases has been performed. From the results, one can conclude the following: the tyre temperature and inflation pressure change with the distance the vehicle travels at the beginning and later become steady; higher external temperature will decrease tyre wear rate since the inflation pressure increases with the external temperature and the sliding friction decreases; higher vehicle speed leads to a higher tyre wear rate; the tyre temperature increases with increasing vehicle speed; the amount of tyre wear increases linearly with the normal load on the tyre; the tyre wear increases with the slip ratio exponentially due to both the siding distance and the sliding friction increasing with the slip ratio; the tyre wear increases exponentially with the slip angle. The complete model can estimate the tyre wear with different vehicle settings and external factors. More experiments are needed in the future to validate the complete model. In addition, since the heat transfer coefficient is changeable with temperature, the thermal model can be improved by introducing dynamic heat transfer coefficients. The Savkoor friction model used in the report can also be improved by tuning its parameters using more experimental data.
Subjects/Keywords: Brush model; Tyre wear; Thermal model; Friction model.; Vehicle Engineering; Farkostteknik
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wangs, T. (2017). Analysis on Tyre Wear : Modelling and Simulations. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271256
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wangs, Taozhi. “Analysis on Tyre Wear : Modelling and Simulations.” 2017. Thesis, KTH. Accessed January 16, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271256.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wangs, Taozhi. “Analysis on Tyre Wear : Modelling and Simulations.” 2017. Web. 16 Jan 2021.
Vancouver:
Wangs T. Analysis on Tyre Wear : Modelling and Simulations. [Internet] [Thesis]. KTH; 2017. [cited 2021 Jan 16].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271256.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wangs T. Analysis on Tyre Wear : Modelling and Simulations. [Thesis]. KTH; 2017. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271256
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Penn State University
15.
Varunjikar, Tejas.
Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models.
Degree: 2011, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/11859
► Geometric design of highways is an important aspect of highway engineering, and in particular, horizontal curves on highways have higher accident rates compared to straight…
(more)
▼ Geometric design of highways is an important aspect of highway engineering, and in particular, horizontal curves on highways have higher accident rates compared to straight roads. Quantitative guidelines for horizontal curve design exist only for flat roads, but not downgrades. This study uses a friction demand versus friction supply approach to check whether the current horizontal curve design policies are acceptable for downgrades. Skid measurements combined with a physics-based
tire model are used to obtain the friction supply at various design speeds. This thesis develops analytical as well as low-order simulation-based models for a vehicle traveling on downgrade in order to find the friction demand of the vehicle. Results show that per-axle friction demand can be significantly higher compared to the overall friction demand which is basis of current design guidelines. The margins of safety are shown to significantly decrease with design speed, and in the case of even moderate braking, go to a very low value at high speeds.
Advisors/Committee Members: Sean N Brennan, Thesis Advisor/Co-Advisor, Sean N Brennan, Thesis Advisor/Co-Advisor.
Subjects/Keywords: horizontal curve design; vehicle dynamics; friction demand; bicycle model; CarSim; point mass model; LuGre tire model; tire pavement friction
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Varunjikar, T. (2011). Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/11859
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Varunjikar, Tejas. “Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models.” 2011. Thesis, Penn State University. Accessed January 16, 2021.
https://submit-etda.libraries.psu.edu/catalog/11859.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Varunjikar, Tejas. “Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models.” 2011. Web. 16 Jan 2021.
Vancouver:
Varunjikar T. Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models. [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Jan 16].
Available from: https://submit-etda.libraries.psu.edu/catalog/11859.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Varunjikar T. Design of Horizontal Curves with Downgrades using Low-Order Vehicle Dynamics Models. [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/11859
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
RMIT University
16.
Hedayati, M.
System model for sustainable end-of-life vehicle treatment in the Australian context.
Degree: 2016, RMIT University
URL: http://researchbank.rmit.edu.au/view/rmit:161901
► A typical end-of-life (ELV) passenger vehicle contains around 30% non-metallic materials including such substances as plastics, textiles, and rubbers. It is mandatory in Europe, Japan,…
(more)
▼ A typical end-of-life (ELV) passenger vehicle contains around 30% non-metallic materials including such substances as plastics, textiles, and rubbers. It is mandatory in Europe, Japan, South Korea, China and Taiwan to reclaim non-metallic materials of ELVs – whereas in Australia, after shredding at metal shredding plants, non-metallic materials of ELVs are sent to landfill as Automobile Shredder Residue (ASR). This research was twofold, aiming firstly to identify the most sustainable treatment practice for the reclamation of non-metallic materials of ELVs in the Australian context, and secondly to determine the most sustainable business model for the implementation of the selected ELV reclamation option for Australia. Based on definitions available in the literature, a sustainable ELV reclamation option was regarded as an environmentally effective, economically affordable, and socially acceptable ELV reclamation option. The literature also indicated that a sustainable business model for any ELV reclamation option was one which contributed to sustainable development of the company, and also society, through the creation of value (materials or energy) from non-metallic materials of ELVs. The research assessed the applications of seven international best practice ELV reclamation options for the Australian context. Prior to sustainability assessments of the ELV reclamation options, the technical viability of the best practice ELV reclamation options were assessed through the multi-criteria assessment (MCA) method. The assessment utilised a set of relevant technical indicators available in the literature. Three of the seven ELV reclamation options were identified as being the most technically viable ELV reclamation options in the Australian context. These options were: (i) thermo-chemical treatment of ASR (pyrolysis/gasification), (ii) mechanical-physical separation of ASR, and (iii) injection of ELV plastics into blast furnaces. The research then applied two different sustainability assessment models in order to assess the sustainability performance of the technically viable ELV reclamation options. These models were: (i) a model based on the ‘triple bottom line’ accounting approach and (ii) an emerging model referred to in the research as the ‘multi-dimensionality’ model. The ELV reclamation options were assessed against nine identified Australian-based sustainability indicators utilising the MCA method. With the application of said methodology thermo-chemical treatment of ASR was determined to be the most sustainable ELV reclamation option for Australia. Following this determination the research identified three international business models for thermo-chemical treatment of ASR. These identified business models were then compared against a set of relevant assessment criteria available in the literature by the utilisation of the MCA method. The business model in which the proposed Australian ASR thermo-chemical plants would be established and operated by metal…
Subjects/Keywords: Fields of Research; End-of-life vehicle; Sustainable technology; Sustainable business model; Multi-criteria assessment; System dynamics; Triple bottom line
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hedayati, M. (2016). System model for sustainable end-of-life vehicle treatment in the Australian context. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:161901
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hedayati, M. “System model for sustainable end-of-life vehicle treatment in the Australian context.” 2016. Thesis, RMIT University. Accessed January 16, 2021.
http://researchbank.rmit.edu.au/view/rmit:161901.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hedayati, M. “System model for sustainable end-of-life vehicle treatment in the Australian context.” 2016. Web. 16 Jan 2021.
Vancouver:
Hedayati M. System model for sustainable end-of-life vehicle treatment in the Australian context. [Internet] [Thesis]. RMIT University; 2016. [cited 2021 Jan 16].
Available from: http://researchbank.rmit.edu.au/view/rmit:161901.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hedayati M. System model for sustainable end-of-life vehicle treatment in the Australian context. [Thesis]. RMIT University; 2016. Available from: http://researchbank.rmit.edu.au/view/rmit:161901
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
17.
Hsiao, Chin-yuan.
Model establish and controller design for active front steering control system.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2012, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809112-163833
► The goal of this thesis is to develop an active front steering(AFS) control system which can apply to ordinary vehicle. This AFS control system stabilizes…
(more)
▼ The goal of this thesis is to develop an active front steering(AFS) control system which can apply to ordinary vehicle. This AFS control system stabilizes the driving vehicle and reduces the possibility of rollover. This thesis uses magic formula
tire model and constructs a vehicle
model with eight degrees of freedom to study the dynamic behavior of the real driving vehicle. This thesis constructs a vehicle
model with three degrees of freedom and eight degree of freedom, compare with two vehicle
model, we adopt eight vehicle
model in this thesis. The advantages of PI controller are low cost and easy to modify, so this thesis adopts PI controller as the control strategy. This study uses four simulate methods and compares the simulated results to develop the AFS control system which can apply to ordinary vehicle.
Advisors/Committee Members: Jui-hung Liu (chair), jau-woei Perng (chair), Yih-Tun Tseng (committee member).
Subjects/Keywords: Vehicle rollover; PI control; Vehicle model; Active front steering; tire model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hsiao, C. (2012). Model establish and controller design for active front steering control system. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809112-163833
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hsiao, Chin-yuan. “Model establish and controller design for active front steering control system.” 2012. Thesis, NSYSU. Accessed January 16, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809112-163833.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hsiao, Chin-yuan. “Model establish and controller design for active front steering control system.” 2012. Web. 16 Jan 2021.
Vancouver:
Hsiao C. Model establish and controller design for active front steering control system. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Jan 16].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809112-163833.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hsiao C. Model establish and controller design for active front steering control system. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0809112-163833
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
18.
Khanse, Karan Rajiv.
Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations.
Degree: MS, Mechanical Engineering, 2015, Virginia Tech
URL: http://hdl.handle.net/10919/56567
► Automotive and Tire companies spend extensive amounts of time and money to tune their products through prototype testing at dedicated test facilities. This is mainly…
(more)
▼ Automotive and
Tire companies spend extensive amounts of time and money to tune their products through prototype testing at dedicated test facilities. This is mainly due to the limitations in the simulation capabilities that exist today. With greater competence in simulation, comes more control over designs in the initial stages, which in turn lowers the demand on the expensive stage of tuning. The work presented, aims at taking today's simulation capabilities a step forward by integrating models that are best developed in different software interfaces. An in-plane rigid ring
model is used to understand the transient response of tires to various high frequency events such as Anti-Lock Braking and short wavelength road disturbances. A rule based ABS
model performs the high frequency braking operation. The
tire and ABS models have been created in the Matlab-Simulink environment. The vehicle
model has been developed in CarSim. The models developed in Simulink have been integrated with the vehicle
model in CarSim, in the form of a design tool that can be used by
tire as well as vehicle designers for further tuning of the vehicle functional performances as they relate to in-
line braking scenarios. Outdoor validation tests were performed to obtain data from a vehicle that was measured on a suspension parameter measuring machine (SPMM) in order to complement this design tool. The results of the objective tests performed have been discussed and the correlations and variations with respect to the simulation results have been analyzed.
Advisors/Committee Members: Taheri, Saied (committeechair), Kennedy, Ronald H. (committee member), Sandu, Corina (committee member).
Subjects/Keywords: Vehicle Model; CarSim; Tire Model; Rigid Ring; ABS
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Khanse, K. R. (2015). Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/56567
Chicago Manual of Style (16th Edition):
Khanse, Karan Rajiv. “Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations.” 2015. Masters Thesis, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/56567.
MLA Handbook (7th Edition):
Khanse, Karan Rajiv. “Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations.” 2015. Web. 16 Jan 2021.
Vancouver:
Khanse KR. Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations. [Internet] [Masters thesis]. Virginia Tech; 2015. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/56567.
Council of Science Editors:
Khanse KR. Development and Validation of a Tool for In-Plane Antilock Braking System (ABS) Simulations. [Masters Thesis]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/56567
Delft University of Technology
19.
Van Ginkel, J.N. (author).
Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements.
Degree: 2014, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:3d5ee83c-a35e-4141-8408-ab3916ca1c8a
► Electronic stability control (ESC) has been shown to reduce the accident rate in a number of situations. Therefore, it is important to keep improving ESC…
(more)
▼ Electronic stability control (ESC) has been shown to reduce the accident rate in a number of situations. Therefore, it is important to keep improving ESC and other control systems. One way to do this is by improving the available information on the state of the vehicle and its environment. The tire-road friction coefficient µ is particularly important, as it limits the maximum possible tire forces. Literature shows that systems like ESC, ABS, torque vectoring and adaptive cruise control all benefit from knowledge of µ. In this study, a new estimation method is proposed to estimate µ, using tire forces. The method works in the non-linear region of the tire and for combined slip conditions. For each tire, µ is estimated using an extended Kalman filter, together with a magic formula tire model. The algorithm then selects the estimate with the lowest uncertainty. The method is developed in Matlab, and evaluated with a CarSim vehicle model under braking, steady-state cornering and for a double lane change. The results show that this estimator is promising first step. It succeeds to estimate µ when the tires are at their limit, but is less successful at lower slip levels. An explanation is that the effect of µ on the slip-slope is not present in CarSim. In the real world, a relationship exists between µ and the slip-slope, so that the estimator has the potential to work for lower levels of slip. Therefore, the proposed next step is to evaluate this estimation method on a real vehicle.
BMD
BioMechanical Engineering
Mechanical, Maritime and Materials Engineering
Advisors/Committee Members: Holweg, E.G.M. (mentor), Happee, R. (mentor).
Subjects/Keywords: tire-road friction coefficient; extended Kalman filter; on-line parameter estimatio; vehicle dynamics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Van Ginkel, J. N. (. (2014). Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:3d5ee83c-a35e-4141-8408-ab3916ca1c8a
Chicago Manual of Style (16th Edition):
Van Ginkel, J N (author). “Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements.” 2014. Masters Thesis, Delft University of Technology. Accessed January 16, 2021.
http://resolver.tudelft.nl/uuid:3d5ee83c-a35e-4141-8408-ab3916ca1c8a.
MLA Handbook (7th Edition):
Van Ginkel, J N (author). “Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements.” 2014. Web. 16 Jan 2021.
Vancouver:
Van Ginkel JN(. Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Jan 16].
Available from: http://resolver.tudelft.nl/uuid:3d5ee83c-a35e-4141-8408-ab3916ca1c8a.
Council of Science Editors:
Van Ginkel JN(. Estimating the Tire-Road Friction Coefficient Based on Tire Force Measurements. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:3d5ee83c-a35e-4141-8408-ab3916ca1c8a
University of Ontario Institute of Technology
20.
Marjani, Mehrsa.
Development of FEA wide-base truck tire and soil interaction models.
Degree: 2016, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/680
► Tires are considered one of the most important components of ground vehicles as they are the only link between the chassis and ground. They support…
(more)
▼ Tires are considered one of the most important components of ground vehicles as they are the only link between the chassis and ground. They support the vehicle weight and cushion road surface irregularities to provide a comfortable ride. Tires are designed in a way that provide necessary tractive, braking, and cornering forces to form a safe and stable ride for ground vehicles. Recent advancements in computerized and virtual modeling provided an efficient methodology for accurate prediction of
tire characteristics. In this thesis Finite Element Analysis (FEA) is employed as a method to accurately construct a new virtual wide-base
tire model, validate it, and then study rolling resistance of the
tire on a hard surface. This thesis includes
tire-soil interaction and effects of soil on tires rolling resistance. To accurately study rolling resistance on soft soil, various soil models are created by using FEA and Smoothed Particle Hydrodynamics (SPH), as a representative of dry sand soil. Soil models are calibrated by using shear-displacement and pressure-sinkage simulation tests. The simulation results are then compared to published data. Also, the created soil models are compared to each other to determine the optimum one based on computational time efficiency and accuracy. SPH, as the accurate current method for soil modeling, has long computational solving time. In this thesis FEA/SPH hybrid soil models are studied and modified to achieve lower computational solving time while having the desirable accuracy. Rolling resistance of
tire on each soil
model is carried out through various loads and inflation pressures and the simulation results are compared to physical test results to examine the accuracy of each soil
model. The new hybrid soil
model created in this thesis reduces the computational CPU time almost by half and slightly increases accuracy compared to full SPH soil
model.
Advisors/Committee Members: El-Gindy, Moustafa.
Subjects/Keywords: FEA wide-base tire modeling; SPH soil model; Hybrid SPH/FEA soil model; Tire/terrain interaction
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Marjani, M. (2016). Development of FEA wide-base truck tire and soil interaction models. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/680
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Marjani, Mehrsa. “Development of FEA wide-base truck tire and soil interaction models.” 2016. Thesis, University of Ontario Institute of Technology. Accessed January 16, 2021.
http://hdl.handle.net/10155/680.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Marjani, Mehrsa. “Development of FEA wide-base truck tire and soil interaction models.” 2016. Web. 16 Jan 2021.
Vancouver:
Marjani M. Development of FEA wide-base truck tire and soil interaction models. [Internet] [Thesis]. University of Ontario Institute of Technology; 2016. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10155/680.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Marjani M. Development of FEA wide-base truck tire and soil interaction models. [Thesis]. University of Ontario Institute of Technology; 2016. Available from: http://hdl.handle.net/10155/680
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
21.
Hlavatý, Jiří.
Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/39796
► This thesis is focused on measuring the shape of loaded tire and finding dependencies between inner tire pressure, load and the influence of these parameters…
(more)
▼ This thesis is focused on measuring the shape of loaded
tire and finding dependencies between inner
tire pressure, load and the influence of these parameters on the resulting shape of the
tire. Data for these dependencies were obtained by using a constructed measuring stand and 3D optical technology. Found dependencies describe the change in shape of the
tire in specific mathematical functions, and served the creation of a parametric
model of the
tire. The main finding of this thesis is that the
tire is actually behaves according to dependencies described by varying degrees of polynomial function.
Advisors/Committee Members: Blaťák, Ondřej (advisor), Vančura, Jan (referee).
Subjects/Keywords: pneumatika; tvar; zatížená pneumatika; 3D skener; parametrický model; Tire; design; tire load; 3D scanner; parametric model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hlavatý, J. (2019). Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/39796
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hlavatý, Jiří. “Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre.” 2019. Thesis, Brno University of Technology. Accessed January 16, 2021.
http://hdl.handle.net/11012/39796.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hlavatý, Jiří. “Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre.” 2019. Web. 16 Jan 2021.
Vancouver:
Hlavatý J. Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/11012/39796.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hlavatý J. Měření tvaru zatížené pneumatiky: Shape Measurement of Loaded Tyre. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/39796
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Virginia Tech
22.
Jimenez, Emilio.
Experimental and Modeling of Pneumatic Tire Performance on Ice.
Degree: PhD, Mechanical Engineering, 2018, Virginia Tech
URL: http://hdl.handle.net/10919/82873
► The tire-ice interaction is a highly complex phenomenon, which has a direct influence on the overall performance of the pneumatic tire. From tire-terrain interaction dynamics,…
(more)
▼ The
tire-ice interaction is a highly complex phenomenon, which has a direct influence on the overall performance of the pneumatic
tire. From
tire-terrain interaction dynamics, it is evident that icy road conditions and
tire operational parameters play a vital role in determining the overall performance of the vehicle. With the reduction of traction available at the surface in icy conditions, the dynamics of the vehicle becomes more unpredictable, as the system can become unstable. In order to design an appropriate safety system, the
tire-ice interaction must be closely investigated. Since the
tire is the part of the vehicle that is in direct contact with the terrain during operation, it is critical to have an in-depth understanding of the contact mechanics at the contact patch.
This study has led to the development and validation of an existing
tire-ice
model to further improve the understanding of the contact phenomena at the
tire-ice interface. Experimental investigations led to a novel measurement technique in order to validate the semi-empirical based
tire-ice contact
model.
The Advanced
Tire-Ice Interface
Model serves to simulate the temperature rise at the contact patch based on the pressure distribution in the contact patch, thermal properties of the tread compound and of the ice surface. Since its initial development, the advanced
model is now capable of simulating the thin water film created from the melted ice, the prediction of tractive performance, the estimation of the viscous friction due to the water layer, and the influence of braking operations including the locked wheel condition.
Experimental studies, carried out at the Terramechanics, Multibody, and Vehicle Systems (TMVS) Laboratory, were performed on the Terramechanics Rig. The investigation included measuring the bulk temperature distribution at the contact patch in order to validate the temperature rise simulations of the original
Tire-Ice
Model. The tractive performance of a P225/60R16 97S Standard Reference Test
Tire and a 235/55R-19 Pirelli Scorpion Verde All-Season Plus XL were also investigated during this study. A design of experiment was prepared to capture the
tire tractive performance under various controlled operating conditions.
Advisors/Committee Members: Sandu, Corina (committeechair), Burdisso, Ricardo A. (committee member), Terziyski, Jan (committee member), Taheri, Saied (committee member), Ferris, John B. (committee member).
Subjects/Keywords: Advanced Tire-Ice Interface Model; Indoor Testing; Water Film Height; Model Validation; Tire Tractive Performance on Ice
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jimenez, E. (2018). Experimental and Modeling of Pneumatic Tire Performance on Ice. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/82873
Chicago Manual of Style (16th Edition):
Jimenez, Emilio. “Experimental and Modeling of Pneumatic Tire Performance on Ice.” 2018. Doctoral Dissertation, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/82873.
MLA Handbook (7th Edition):
Jimenez, Emilio. “Experimental and Modeling of Pneumatic Tire Performance on Ice.” 2018. Web. 16 Jan 2021.
Vancouver:
Jimenez E. Experimental and Modeling of Pneumatic Tire Performance on Ice. [Internet] [Doctoral dissertation]. Virginia Tech; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/82873.
Council of Science Editors:
Jimenez E. Experimental and Modeling of Pneumatic Tire Performance on Ice. [Doctoral Dissertation]. Virginia Tech; 2018. Available from: http://hdl.handle.net/10919/82873
23.
O'Connor, Samantha.
A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model.
Degree: MS, 2014, Worcester Polytechnic Institute
URL: etd-090714-204841
;
https://digitalcommons.wpi.edu/etd-theses/1027
► "Steric forces related to the lipopolysaccharide (LPS) brush on bacterial surfaces is of great importance in biofilm research. However, the atomic force microscopy (AFM) data,…
(more)
▼ "Steric forces related to the lipopolysaccharide (LPS)
brush on bacterial surfaces is of great importance in biofilm research. However, the atomic force microscopy (AFM) data, or force curves, produced require extensive analysis to obtain any useful information about the sample. Normally, after several force curves have been measured, the individual curves would be fit to a
model for analysis. This process is not only time-consuming, but it is also extremely subjective as it lends itself to user bias throughout the analysis. A Matlab program to analyze force curves from an AFM efficiently, accurately, and with minimal user bias has been developed and is presented here. The analysis is based on a modified version of the Alexander and de Gennes (AdG) polymer
model, which is a function of equilibrium polymer
brush length, probe radius, temperature, separation distance, and a density variable. The program runs efficiently by cropping curves to the region specified by the
model and then fitting the data. Automating the procedure reduces the amount of time required to process 100 force curves from several days to less than two minutes. Accuracy is ensured by making the program highly adjustable. The user can specify experimental constants such as the temperature and cantilever tip geometry, as well as adjust many cropping and fitting parameters to better analyze the data. Additionally, as part of this program, researchers can compare data from related experiments by choosing to plot the calculated fit parameters using either error bars or box plots to quickly identify relationships or trends. The use of this program to crop and fit force curves to the AdG
model will allow researchers to ensure proper processing of large amounts of experimental data and reduce the time required for analysis and comparison of data, thereby enabling higher quality results in a shorter period of time. "
Advisors/Committee Members: Qi Wen, Reader, Nancy A. Burnham, Advisor,
Subjects/Keywords: Matlab; polymer brush; atomic force microscopy; Alexander-deGennes model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
O'Connor, S. (2014). A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model. (Thesis). Worcester Polytechnic Institute. Retrieved from etd-090714-204841 ; https://digitalcommons.wpi.edu/etd-theses/1027
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
O'Connor, Samantha. “A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model.” 2014. Thesis, Worcester Polytechnic Institute. Accessed January 16, 2021.
etd-090714-204841 ; https://digitalcommons.wpi.edu/etd-theses/1027.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
O'Connor, Samantha. “A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model.” 2014. Web. 16 Jan 2021.
Vancouver:
O'Connor S. A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model. [Internet] [Thesis]. Worcester Polytechnic Institute; 2014. [cited 2021 Jan 16].
Available from: etd-090714-204841 ; https://digitalcommons.wpi.edu/etd-theses/1027.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
O'Connor S. A High Throughput Matlab Program for Automated Force-Curve Processing Using the AdG Polymer Model. [Thesis]. Worcester Polytechnic Institute; 2014. Available from: etd-090714-204841 ; https://digitalcommons.wpi.edu/etd-theses/1027
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
24.
Ahn, Chang Sun.
Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems.
Degree: PhD, Mechanical Engineering, 2011, University of Michigan
URL: http://hdl.handle.net/2027.42/84523
► Vehicle active safety systems stabilize the vehicle by controlling tire forces. They work well only when the tire force command computed by the safety systems…
(more)
▼ Vehicle active safety systems stabilize the vehicle by controlling
tire forces. They work well only when the
tire force command computed by the safety systems is within the friction limit. Therefore, knowledge of the
tire/road friction coefficient is important to improve their performance. The objective of this dissertation is to develop a robust friction coefficient estimation algorithm for vehicle active safety systems. The algorithm should be operational in a wide range of vehicle states, robust to plant uncertainties, and use information from sensors that are readily available on typical passenger vehicles.
This study presents two methods of estimating the friction coefficient: a lateral dynamics based method and a longitudinal dynamics based method. These two methods are then integrated to improve the working range and robustness of the estimator. The first method is a nonlinear observer based on vehicle lateral/yaw dynamics and the
Brush tire model, whereas the second method is a recursive least squares method based on the relationship between
tire longitudinal slip and traction force. The two methods are complementary to each other because they rely on different excitation conditions. Therefore, they can be integrated by a switching method where the switching signal depends on the level and kind of excitation.
The performance of the estimation algorithm was verified using simulations and test data under a wide range of friction and speed conditions. The test was performed on three different road surfaces: concrete, snow, and ice. The algorithm is able to estimate the friction coefficient of these three surfaces, including during abrupt surface changes and tracks the friction coefficient variance. It exhibits reasonable performance under various driving conditions based on the basic sensors used in vehicle stability control systems. The overall results from simulations and the experiments demonstrate that the proposed approach has the potential for practical applicability to vehicle active safety control.
Advisors/Committee Members: Peng, Huei (committee member), Eustice, Ryan M. (committee member), Gordon, Timothy J. (committee member), Stein, Jeffrey L. (committee member).
Subjects/Keywords: Estimation of Friction Coefficient; Vehicle Active Safety; Brush Tire Model; Nonlinear Observer; Nonlinear Least Squares; Recursive Least Squares; Mechanical Engineering; Engineering
…71
Figure 4.5 Tire longitudinal force curves of the Brush tire model… …80
Figure 4.14 Longitudinal tread deformation of a free rolling Brush
model tire… …81
Figure 4.16 Longitudinal deformation of the tire tread using the
Brush model under non… …Brush
tire model, whereas the second method is a recursive least squares method based on the… …of the Brush tire model and used wheel speed signal to
estimate the road friction…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ahn, C. S. (2011). Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/84523
Chicago Manual of Style (16th Edition):
Ahn, Chang Sun. “Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems.” 2011. Doctoral Dissertation, University of Michigan. Accessed January 16, 2021.
http://hdl.handle.net/2027.42/84523.
MLA Handbook (7th Edition):
Ahn, Chang Sun. “Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems.” 2011. Web. 16 Jan 2021.
Vancouver:
Ahn CS. Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems. [Internet] [Doctoral dissertation]. University of Michigan; 2011. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/2027.42/84523.
Council of Science Editors:
Ahn CS. Robust Estimation of Road Friction Coefficient for Vehicle Active Safety Systems. [Doctoral Dissertation]. University of Michigan; 2011. Available from: http://hdl.handle.net/2027.42/84523
Virginia Tech
25.
Pinto, Eduardo Jose.
A Three Dimensional Discretized Tire Model For Soft Soil Applications.
Degree: MS, Mechanical Engineering, 2012, Virginia Tech
URL: http://hdl.handle.net/10919/41335
► A significant number of studies address various aspects related to tire modeling; most are dedicated to the development of tire models for on-road conditions. Such…
(more)
▼ A significant number of studies address various aspects related to
tire modeling; most are dedicated to the development of
tire models for on-road conditions. Such models cover a wide range of resolutions and approaches, as required for specific applications. At one end of the spectrum are the very simple
tire models, such as those employed in real-time vehicle dynamic simulations. At the other end of the spectrum are the very complex finite element models, such as those used in
tire design. In between these extremes, various other models have been developed, at different levels of compromise between accuracy and computational efficiency. Existing
tire models for off-road applications lag behind the on-road models. The main reason is the complexity added to the modeling due to the interaction with the soft soil. In such situations, one must account for the soil dynamics and its impact on the
tire forces, in addition to those aspects considered for an on-road
tire.
The goal of this project is to develop an accurate and comprehensive, while also efficient, off-road
tire model for soft soil applications. The types of applications we target are traction, handling, and vehicle durability, as needed to support current army mobility goals. Thus, the proposed approach is to develop a detailed semi-analytical
tire model for soft soil that utilizes the
tire construction details and parallels existing commercially available on-road
tire models. The novelty of this project relies in developing a three-dimensional three-layer
tire model employing discrete lumped masses and in improving the
tire-soil interface
model. This will be achieved by enhancing the resolution of the
tire model at the contact patch and by accounting for effects and phenomena not considered in existing models.
Advisors/Committee Members: Sandu, Corina (committeechair), West, Robert L. Jr. (committee member), Ferris, John B. (committee member).
Subjects/Keywords: terramechanics; soft soil tire model; vehicle dynamics; off-road
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pinto, E. J. (2012). A Three Dimensional Discretized Tire Model For Soft Soil Applications. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/41335
Chicago Manual of Style (16th Edition):
Pinto, Eduardo Jose. “A Three Dimensional Discretized Tire Model For Soft Soil Applications.” 2012. Masters Thesis, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/41335.
MLA Handbook (7th Edition):
Pinto, Eduardo Jose. “A Three Dimensional Discretized Tire Model For Soft Soil Applications.” 2012. Web. 16 Jan 2021.
Vancouver:
Pinto EJ. A Three Dimensional Discretized Tire Model For Soft Soil Applications. [Internet] [Masters thesis]. Virginia Tech; 2012. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/41335.
Council of Science Editors:
Pinto EJ. A Three Dimensional Discretized Tire Model For Soft Soil Applications. [Masters Thesis]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/41335
University of Ontario Institute of Technology
26.
Lardner, Kristian Lee.
Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions.
Degree: 2017, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/802
► Significant time and cost savings can be realized through the use of virtual simulation of testing procedures across diverse areas of research and development. Fully…
(more)
▼ Significant time and cost savings can be realized through the use of virtual simulation of testing procedures across diverse areas of research and development. Fully detailed virtual truck models using the simplified off-road rigid-ring
model parameters may further increase these economical savings within the automotive industry. The determination of the off-road rigid-ring parameters is meant to facilitate the simulation of full vehicle models developed by Volvo Group Trucks Technology. This works features new FEA (Finite Element Analysis)
tire and SPH (Smoothed Particle Hydrodynamics) soil interaction modeling techniques. The in-plane and out-of-plane off-road rigid-ring parameters are predicted for an RHD (Regional Haul Drive) truck
tire at varying operating conditions. The
tire model is validated through static and dynamic virtual tests that are compared to previously published literature.
Both the in-plane and out-of-plane off-road rigid-ring RHD parameters were successfully predicted. The majority of the in-plane parameters are strongly influenced by the inflation pressure of the
tire because the in-plane parameters are derived with respect to the mode of vibration of the
tire. The total equivalent vertical stiffness on a dry sand is not as heavily influenced by the inflation pressure compared to predictions on a hard surface. For perspective, at 110 psi, the dry sand total vertical stiffness is nearly nine times smaller than that determined on the hard surface, while the lateral stiffness on soft soil (Dry Sand) is at a minimal of three times higher than that of the corresponding values tested on a hard surface. The cornering stiffness is primarily load dependant because the inflation pressure is only noticeably influential at high vertical loads. More importantly, the soil builds in front of the
tire, creating what is called a bulldozing effect, during high slip angles. The additional lateral force of the soil exerted onto the
tire during cornering maneuvers may contribute to higher than expected results and may be confirmed through future investigation of the cohesion of the soil
model.
Advisors/Committee Members: El-Gindy, Moustafa.
Subjects/Keywords: FEA (Finite Element Analysis); SPH (Smoothed Particle Hydrodynamics); RHD (Regional Haul Drive truck tire); Off-Road Rigid-Ring Tire Model
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lardner, K. L. (2017). Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/802
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lardner, Kristian Lee. “Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions.” 2017. Thesis, University of Ontario Institute of Technology. Accessed January 16, 2021.
http://hdl.handle.net/10155/802.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lardner, Kristian Lee. “Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions.” 2017. Web. 16 Jan 2021.
Vancouver:
Lardner KL. Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions. [Internet] [Thesis]. University of Ontario Institute of Technology; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10155/802.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lardner KL. Prediction of the off-road rigid-ring model parameters for truck tire and soft soil interactions. [Thesis]. University of Ontario Institute of Technology; 2017. Available from: http://hdl.handle.net/10155/802
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Iowa
27.
Yamashita, Hiroki.
Flexible multibody dynamics approach for tire dynamics simulation.
Degree: PhD, Mechanical Engineering, 2016, University of Iowa
URL: https://ir.uiowa.edu/etd/2297
► The objective of this study is to develop a high-fidelity physics-based flexible tire model that can be fully integrated into multibody dynamics computer algorithms…
(more)
▼ The objective of this study is to develop a high-fidelity physics-based flexible
tire model that can be fully integrated into multibody dynamics computer algorithms for use in on-road and off-road vehicle dynamics simulation without ad-hoc co-simulation techniques. Despite the fact detailed finite element
tire models using explicit finite element software have been widely utilized for structural design of tires by
tire manufactures, it is recognized in the
tire industry that existing state-of-the-art explicit finite element
tire models are not capable of predicting the transient
tire force characteristics accurately under severe vehicle maneuvering conditions due to the numerical instability that is essentially inevitable for explicit finite element procedures for severe loading scenarios and the lack of transient (dynamic)
tire friction
model suited for FE
tire models. Furthermore, to integrate the deformable
tire models into multibody full vehicle simulation, co-simulation technique could be an option for commercial software. However, there exist various challenges in co-simulation for the transient vehicle maneuvering simulation in terms of numerical stability and computational efficiency. The transient
tire dynamics involves rapid changes in contact forces due to the abrupt braking and steering input, thus use of co-simulation requires very small step size to ensure the numerical stability and energy balance between two separate simulation using different solvers.
In order to address these essential and challenging issues on the high-fidelity flexible
tire model suited for multibody vehicle dynamics simulation, a physics-based
tire model using the flexible multibody dynamics approach is proposed in this study. To this end, a continuum mechanics based shear deformable laminated composite shell element is developed based on the finite element absolute nodal coordinate formulation for modeling the complex fiber reinforced rubber
tire structure. The assumed natural strain (ANS) and enhanced assumed strain (EAS) approaches are introduced for alleviating element lockings exhibited in the element. Use of the concept of the absolute nodal coordinate formulation leads to various advantages for
tire dynamics simulation in that (1) constant mass matrix can be obtained for fully nonlinear dynamics simulation; (2) exact modeling of rigid body motion is ensured when strains are zero; and (3) non-incremental solution procedure utilized in the general multibody dynamics computer algorithm can be directly applied without specialized updating schemes for finite rotations. Using the proposed shear deformable laminated composite shell element, a physics-based flexible
tire model is developed. To account for the transient
tire friction characteristics including the friction-induced hysteresis that appears in severe maneuvering conditions, the distributed parameter LuGre
tire friction
model is integrated into the flexible
tire model. To this end, the contact patch predicted by the structural
tire model is discretized into…
Advisors/Committee Members: Sugiyama, Hiroyuki, 1974- (supervisor).
Subjects/Keywords: Absolute Nodal Coordinate Formulation; Flexible Multibody Dynamics; LuGre tire friction model; Off Road Mobility Simulation; Tire Dynamics Simulation; Mechanical Engineering
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yamashita, H. (2016). Flexible multibody dynamics approach for tire dynamics simulation. (Doctoral Dissertation). University of Iowa. Retrieved from https://ir.uiowa.edu/etd/2297
Chicago Manual of Style (16th Edition):
Yamashita, Hiroki. “Flexible multibody dynamics approach for tire dynamics simulation.” 2016. Doctoral Dissertation, University of Iowa. Accessed January 16, 2021.
https://ir.uiowa.edu/etd/2297.
MLA Handbook (7th Edition):
Yamashita, Hiroki. “Flexible multibody dynamics approach for tire dynamics simulation.” 2016. Web. 16 Jan 2021.
Vancouver:
Yamashita H. Flexible multibody dynamics approach for tire dynamics simulation. [Internet] [Doctoral dissertation]. University of Iowa; 2016. [cited 2021 Jan 16].
Available from: https://ir.uiowa.edu/etd/2297.
Council of Science Editors:
Yamashita H. Flexible multibody dynamics approach for tire dynamics simulation. [Doctoral Dissertation]. University of Iowa; 2016. Available from: https://ir.uiowa.edu/etd/2297
28.
Lee, Hojong.
Identification of Tire Dynamics Based on Intelligent Tire.
Degree: PhD, Mechanical Engineering, 2017, Virginia Tech
URL: http://hdl.handle.net/10919/88829
► Sensor-embedded tires, known as intelligent tires, have been widely studied because they are believed to provide reliable and crucial information on tire-road contact characteristics e.g.,…
(more)
▼ Sensor-embedded tires, known as intelligent tires, have been widely studied because
they are believed to provide reliable and crucial information on
tire-road contact
characteristics e.g., slip, forces and deformation of tires. Vehicle control systems such as
ABS and VSP (Vehicle Stability Program) can be enhanced by leveraging this information
since control algorithms can be updated based on directly measured parameters from
intelligent
tire rather than estimated parameters based on complex vehicle dynamics and
on-board sensor measurements. Moreover, it is also expected that intelligent tires can be
utilized for the purpose of the analysis of
tire characteristics, taking into consideration
that the measurements from the sensors inside the
tire would contain considerable
information on
tire behavior in the real driving scenarios. In this study, estimation
methods for the
tire-road contact features by utilizing intelligent tires are investigated.
Also, it was discussed how to identify key
tire parameters based on the fusion technology
of intelligent
tire and
tire modeling. To achieve goals, extensive literature reviews on the
estimation methods using the intelligent
tire system was conducted at first. Strain-based
intelligent tires were introduced and tested in the laboratory for this research.
Based on the literature review and test results, estimation methods for diverse
tire-road contact characteristics such as slippages and contact forces have been proposed.
These estimation methods can be grouped into two categories: statistical regressions and
model based methods. For statistical regressions, synthetic regressors were proposed for
the estimation of contact parameters such as contact lengths, rough contact shapes, test
loads and slip angles. In the
model-based method, the
brush type
tire model was
incorporated into the estimation process to predict lateral forces. Estimated parameters
using suggested methods agreed well with measured values in the laboratory
environment.
By utilizing sensor measurements from intelligent tires, the
tire physical
characteristics related to in-plane dynamics of the
tire, such as stiffness of the belt and
sidewall, contact pressure distribution and internal damping, were identified based on
the combination of strain measurements and a flexible ring
tire model. The radial
deformation of the tread band was directly obtained from strain measurements based on
the strain-deformation relationship.
Tire parameters were identified by fitting the radial
deformations from the flexible ring
model to those derived from strain measurements.
This approach removed the complex and repeated procedure to satisfy the contact3
constraints between the tread and the road surface in the traditional ring
model. For tires
with different specifications, identification using the suggested method was conducted
and their results are compared with results from conventional methods and tests, which
shows good agreements. This approach is available for the
tire standing still or…
Advisors/Committee Members: Taheri, Saied (committeechair), Sandu, Corina (committee member), Tarazaga, Pablo Alberto (committee member), Kennedy, Ronald H. (committee member), Li, Kejing (committee member).
Subjects/Keywords: intelligent tire; sensor; tire model; strain; identification
…82
Fig. 4-19 Scheme for lateral force estimation based on Brush tire model… …122
6.1
6.2
6.3
6.3.1
6.3.2
6.3.3
6.4
6.5
6.5.1
Flexible Ring Model for Rolling Tire… …131
Model response to general concentrated line forces… …Development of a tire model
based on an analysis of tire strain obtained by an intelligent tire… …tire specifications:
(a) based on flexible ring model only (b) based on…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lee, H. (2017). Identification of Tire Dynamics Based on Intelligent Tire. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/88829
Chicago Manual of Style (16th Edition):
Lee, Hojong. “Identification of Tire Dynamics Based on Intelligent Tire.” 2017. Doctoral Dissertation, Virginia Tech. Accessed January 16, 2021.
http://hdl.handle.net/10919/88829.
MLA Handbook (7th Edition):
Lee, Hojong. “Identification of Tire Dynamics Based on Intelligent Tire.” 2017. Web. 16 Jan 2021.
Vancouver:
Lee H. Identification of Tire Dynamics Based on Intelligent Tire. [Internet] [Doctoral dissertation]. Virginia Tech; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10919/88829.
Council of Science Editors:
Lee H. Identification of Tire Dynamics Based on Intelligent Tire. [Doctoral Dissertation]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/88829
University of Windsor
29.
Li, Zhanbiao.
Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety.
Degree: PhD, Mechanical, Automotive, and Materials
Engineering, 2014, University of Windsor
URL: http://scholar.uwindsor.ca/etd/5197
► In this research, experimental and numerical methods were used to analyse the performance of multi-piece wheel structures and two proposed innovative designs to enhance…
(more)
▼ In this research, experimental and
numerical methods were used to analyse the performance of
multi-piece wheel structures and two proposed innovative designs to
enhance safety were validated by computer simulations. Fatality
report analyses revealed that the majority (90%) of the
multi-piece
wheel failures were caused by use of lock rings. Experimental
tire
and rim base tests were conducted to understand the deflection
characteristics of off-the-road tires and to validate the finite
element
model of a five-piece wheel/
tire (sized 29.5-29) assembly.
A linear relationship was found between the vertical displacement
of the wheel and the maximum lateral deflection of the
tire for
both static and quasi static loading tests. A robust
tire model was
validated with an average accumulative error of 9.7% and an average
validation metric of 0.96 for
tire deflections, compared to the
experimental tests. The rim base
model was validated with an
average error of 7.6% and an average validation metric of 0.93 for
wheel deformations, and an average accumulative error of 12.7% and
an average validation metric of 0.88 for strains, compared to
experimental tests. Based on validated FE
model of the five-piece
wheel/
tire assembly, geometry degradation (material wear out at
critical regions) and material degradation (fatigue and corrosion)
were studied to estimate their effects on fatigue lives. Two design
innovations were proposed to enhance safety and fatigue life of the
five-piece wheel. The threaded-connection design reduced the
possibility of failure due to the mismatched wheel components. The
BS band pull-out simulation revealed that the threaded-connection
design was twice as strong as the conventional five-piece design in
holding wheel components and the
tire together, and the wheel may
fail in a safer mode. The fatigue lives of the rim base were two
orders of magnitude higher than those of the conventional
five-piece wheel. The two-piece wheel design completely removed the
possibility of wheel failure due to mismatched wheel components;
the fatigue lives were increased by over two orders of magnitude,
compared to the conventional five-piece
wheel.
Advisors/Committee Members: Altenhof, William, Andrews, Dave.
Subjects/Keywords: Design optimization; Fatigue life analysis; FE modelling; multi-piece wheel; OTR Tire and Wheel; safety
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, Z. (2014). Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety. (Doctoral Dissertation). University of Windsor. Retrieved from http://scholar.uwindsor.ca/etd/5197
Chicago Manual of Style (16th Edition):
Li, Zhanbiao. “Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety.” 2014. Doctoral Dissertation, University of Windsor. Accessed January 16, 2021.
http://scholar.uwindsor.ca/etd/5197.
MLA Handbook (7th Edition):
Li, Zhanbiao. “Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety.” 2014. Web. 16 Jan 2021.
Vancouver:
Li Z. Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety. [Internet] [Doctoral dissertation]. University of Windsor; 2014. [cited 2021 Jan 16].
Available from: http://scholar.uwindsor.ca/etd/5197.
Council of Science Editors:
Li Z. Mechanical Analyses of Multi-piece Mining Vehicle Wheels to
Enhance Safety. [Doctoral Dissertation]. University of Windsor; 2014. Available from: http://scholar.uwindsor.ca/etd/5197
University of Windsor
30.
Li, Zhanbiao.
Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety.
Degree: PhD, Mechanical, Automotive, and Materials Engineering, 2014, University of Windsor
URL: https://scholar.uwindsor.ca/etd/5197
► In this research, experimental and numerical methods were used to analyse the performance of multi-piece wheel structures and two proposed innovative designs to enhance…
(more)
▼ In this research, experimental and numerical methods were used to analyse the performance of
multi-piece wheel structures and two proposed innovative designs to enhance safety were validated by computer simulations. Fatality report analyses revealed that the majority (90%) of the
multi-piece wheel failures were caused by use of lock rings. Experimental
tire and rim base tests were conducted to understand the deflection characteristics of off-the-road tires and to validate the finite element
model of a five-piece wheel/
tire (sized 29.5-29) assembly. A linear relationship was found between the vertical displacement of the wheel and the maximum lateral deflection of the
tire for both static and quasi static loading tests. A robust
tire model was validated with an average accumulative error of 9.7% and an average validation metric of 0.96 for
tire deflections, compared to the experimental tests. The rim base
model was validated with an average error of 7.6% and an average validation metric of 0.93 for wheel deformations, and an average accumulative error of 12.7% and an average validation metric of 0.88 for strains, compared to experimental tests. Based on validated FE
model of the five-piece wheel/
tire assembly, geometry degradation (material wear out at critical regions) and material degradation (fatigue and corrosion) were studied to estimate their effects on fatigue lives. Two design innovations were proposed to enhance safety and fatigue life of the five-piece wheel. The threaded-connection design reduced the possibility of failure due to the mismatched wheel components. The BS band pull-out simulation revealed that the threaded-connection design was twice as strong as the conventional five-piece design in holding wheel components and the
tire together, and the wheel may fail in a safer mode. The fatigue lives of the rim base were two orders of magnitude higher than those of the conventional five-piece wheel. The two-piece wheel design completely removed the possibility of wheel failure due to mismatched wheel components; the fatigue lives were increased by over two orders of magnitude, compared to the conventional five-piece wheel.
Advisors/Committee Members: Altenhof, William, Andrews, Dave.
Subjects/Keywords: Design optimization; Fatigue life analysis; FE modelling; multi-piece wheel; OTR Tire and Wheel; safety
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, Z. (2014). Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5197
Chicago Manual of Style (16th Edition):
Li, Zhanbiao. “Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety.” 2014. Doctoral Dissertation, University of Windsor. Accessed January 16, 2021.
https://scholar.uwindsor.ca/etd/5197.
MLA Handbook (7th Edition):
Li, Zhanbiao. “Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety.” 2014. Web. 16 Jan 2021.
Vancouver:
Li Z. Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety. [Internet] [Doctoral dissertation]. University of Windsor; 2014. [cited 2021 Jan 16].
Available from: https://scholar.uwindsor.ca/etd/5197.
Council of Science Editors:
Li Z. Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety. [Doctoral Dissertation]. University of Windsor; 2014. Available from: https://scholar.uwindsor.ca/etd/5197
◁ [1] [2] [3] [4] [5] … [2299] ▶
. 
Open Access Theses and Dissertations
