You searched for subject:(Tweel).
Showing records 1 – 4 of
4 total matches.
No search limiters apply to these results.
Clemson University
1.
Veeramurthy, Mallikarjun.
Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance.
Degree: MS, Mechanical Engineering, 2011, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/1154 
► Recently, the development of non-pneumatic tires (NPT) such as the Michelin Tweel is receiving increased attention due to potential advantages over pneumatic tires such as…
(more)
▼ Recently, the development of non-pneumatic tires (NPT) such as the Michelin
Tweel is receiving increased attention due to potential advantages over pneumatic tires such as low mass, no run flat, good contact pressure distribution, and low rolling resistance (RR). This study focuses on the design of a NPT based on properties of vertical stiffness, contact pressure, and rolling energy loss. Using a finite element (FE) model, a parametric study is conducted to study the effect on vertical stiffness, contact pressure, and rolling resistance (RR) response considering three design variables: (1) thickness of the spokes, (2) the shear band thickness, and (3) shear modulus of the shear band and spokes of the NPT. The first two design variables are geometric parameters of the NPT while the third design variable is a material parameter. Using the three design variables, a design of experiments (DOE) is performed to study the effect on RR, contact pressure, and vertical displacement. Results from the DOE are used to create response surface models (RSM) for the objective function (minimal RR) and constraints on vertical deflection and contact pressure. The analytical RSM function is optimized for minimizing the rolling loss subjected to the given constraints. In addition, a design sensitivity study is performed to evaluate the influence of the design variables on the output response. Results indicate that all the design variables have significant effect on RR, with the shear band thickness and shear modulus having the greater effect.
Advisors/Committee Members: Thompson, Lonny, Ju , Jaehyung, Summers , Joshua, Li , Gang.
Subjects/Keywords: Non-pneumatic tire; NPT; Optimization; Rolling resistance; Tire; Tweel; 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):
Veeramurthy, M. (2011). Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/1154
Chicago Manual of Style (16th Edition):
Veeramurthy, Mallikarjun. “Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance.” 2011. Masters Thesis, Clemson University. Accessed January 16, 2021.
https://tigerprints.clemson.edu/all_theses/1154.
MLA Handbook (7th Edition):
Veeramurthy, Mallikarjun. “Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance.” 2011. Web. 16 Jan 2021.
Vancouver:
Veeramurthy M. Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance. [Internet] [Masters thesis]. Clemson University; 2011. [cited 2021 Jan 16].
Available from: https://tigerprints.clemson.edu/all_theses/1154.
Council of Science Editors:
Veeramurthy M. Modeling, finite element analysis, and optimization of Non-Pneumatic Tire (NPT) for the minimization of rolling resistance. [Masters Thesis]. Clemson University; 2011. Available from: https://tigerprints.clemson.edu/all_theses/1154
Clemson University
2.
Paradiso, Marc.
DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION.
Degree: MS, Mechanical Engineering, 2009, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/535
► The ride comfort of a vehicle is very important to both automotive and tire manufacturers. Unfortunately the ride comfort provided by the tire has an…
(more)
▼ The ride comfort of a vehicle is very important to both automotive and tire manufacturers. Unfortunately the ride comfort provided by the tire has an inverse relationship with the handling ability of the vehicle. Michelin has sought to decouple ride comfort and handling capability by developing a non-pneumatic tire they have dubbed the TWEEL©. To better understand what effects fitting a
TWEEL with specific characteristics would have on the ride comfort of a vehicle a computer simulation was developed to study the effects of
TWEEL stiffness and deflection on ride comfort. The vehicle model used in the simulation is a continuation and expansion of the linear vehicle model developed by Law [3]. The original model includes the following degrees of freedom: vertical motions of the front and rear axles, vertical and pitching motions of the sprung mass, and vertical motion of the engine. The original linear model was run and analyzed in the frequency domain. This work expands the previous work by treating both the shocks and the TWEELS as nonlinear elements. The nonlinear model was implemented in Simulink and run in the temporal domain. The data was analyzed in both the frequency and the temporal domain. The program outputs include the frequency response functions, the power spectral densities (PSDs) and root mean square (RMS) values for various outputs as well as channel data plotted against time. The ISO 2631 weighted RMS accelerations are plotted along with the ISO 2631 [1,2] comfort curves. Tire-to-road forces are also examined.
Advisors/Committee Members: Law, E. Harry, Ziegert , John, Ayalew , Beshahwired.
Subjects/Keywords: Ride Comfort; Simulation; TWEEL; 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):
Paradiso, M. (2009). DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/535
Chicago Manual of Style (16th Edition):
Paradiso, Marc. “DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION.” 2009. Masters Thesis, Clemson University. Accessed January 16, 2021.
https://tigerprints.clemson.edu/all_theses/535.
MLA Handbook (7th Edition):
Paradiso, Marc. “DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION.” 2009. Web. 16 Jan 2021.
Vancouver:
Paradiso M. DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION. [Internet] [Masters thesis]. Clemson University; 2009. [cited 2021 Jan 16].
Available from: https://tigerprints.clemson.edu/all_theses/535.
Council of Science Editors:
Paradiso M. DEVELOPMENT OF A NONLINEAR RIDE QUALITY MODEL TO AID IN TWEELå© PARAMETER SELECTION. [Masters Thesis]. Clemson University; 2009. Available from: https://tigerprints.clemson.edu/all_theses/535
Clemson University
3.
Rutherford, William.
Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling.
Degree: MS, Mechanical Engineering, 2009, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/614
► During high speed rolling of a non-pneumatic wheel, vibration may be produced by the interaction of collapsible spokes with a shear deformable ring as they…
(more)
▼ During high speed rolling of a non-pneumatic wheel, vibration may be produced by the interaction of collapsible spokes with a shear deformable ring as they enter the contact region, buckle and then snap back into a state of tension. In the present work, a 2D planar finite element model with geometric nonlinearity and explicit time-stepping is used to simulate rolling of the non-pneumatic wheel. Vibration characteristics are measured from the FFT frequency spectrum of the time-signals of perpendicular distance of marker nodes from the virtual plane of the spoke, thickness change in the ring between spokes, and ground reaction forces. Both maximum peak amplitudes and RMS measures are considered as measures of vibration. In the present work, a systematic study of the effects of six key geometric design parameters is presented using Orthogonal Arrays. Orthogonal Arrays are part of a design process method developed by Taguchi which provides an efficient way to determine the effects of variable levels and a guide to optimal combinations of design variables. Two complementary Orthogonal Arrays are evaluated. The first is the L8 orthogonal array which considers the six geometric design variables evaluated at lower and higher limiting values for a total of eight experiments defined by statistically efficient variable combinations. Based on the results from the L8 orthogonal array, a second L9 orthogonal array experiment evaluates the nonlinear effects in the four parameters of greatest interest, (a) spoke length, (b) spoke curvature, (c) spoke thickness, and (d) shear beam thickness. The L9 array consists of nine experiments with efficient combinations of low, intermediate, and high value levels. Results from the Orthogonal Array experiments were used to find combinations of parameters which significantly reduce peak and RMS amplitudes, and suggest which variables have the greatest effect on vibration amplitudes. The results of orthogonal arrays indicate that spoke length and spoke curvature were the most influential parameters on the amplitude of vibration for all three vibration measures. The optimal configuration predicted for these two parameters is a wheel with short spokes with large curvature. The order of influence and optimal levels of the other four variables varies according to the measure of vibration. The results show that there was effectively no interaction between spoke length and spoke thickness. However there are interactions between other variables in the system, and this interaction is stronger when non-linear variable levels were considered from the L9-array. Geometries are presented that minimize vibration for each source, and an optimal geometry is suggested that significantly reduces vibration for all measures of vibration considered. A study of natural frequency and mode shapes extracted from the operational state of the system suggest that geometries with high amplitude peaks in the FFT spectrum for spoke vibration show a correlation with spoke…
Advisors/Committee Members: Thompson, Lonny L, Ziegert , John C, Li , Gang.
Subjects/Keywords: FEA; Finite Element Analysis; non-pneumatic wheel; Orthogonal Array; Tweel; Vibration; 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):
Rutherford, W. (2009). Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/614
Chicago Manual of Style (16th Edition):
Rutherford, William. “Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling.” 2009. Masters Thesis, Clemson University. Accessed January 16, 2021.
https://tigerprints.clemson.edu/all_theses/614.
MLA Handbook (7th Edition):
Rutherford, William. “Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling.” 2009. Web. 16 Jan 2021.
Vancouver:
Rutherford W. Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling. [Internet] [Masters thesis]. Clemson University; 2009. [cited 2021 Jan 16].
Available from: https://tigerprints.clemson.edu/all_theses/614.
Council of Science Editors:
Rutherford W. Use of Orthogonal Arrays for Efficient Evaluation of Geometric Designs for Reducing Vibration of a Non-Pneumatic Wheel During High-Speed Rolling. [Masters Thesis]. Clemson University; 2009. Available from: https://tigerprints.clemson.edu/all_theses/614
Georgia Tech
4.
Cobert, Austin.
Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis.
Degree: MS, Mechanical Engineering, 2009, Georgia Tech
URL: http://hdl.handle.net/1853/37202
► Recently Michelin has been developing a new airless, integrated tire and wheel combination called the Tweel. The Tweel promises performance levels beyond those possible with…
(more)
▼ Recently Michelin has been developing a new airless, integrated tire and wheel combination called the
Tweel. The
Tweel promises performance levels beyond those possible with conventional pneumatic technology because of its shear band design, added suspension, and decreased rolling resistance. However, many questions remain as to what kind of environmental impact this radical new design will have. The environmental impact of the
Tweel will be compared to a current radial tire used on BMWs, but because of the complexity in manufacturing, using, and disposing these tires it is somewhat difficult to compare environmental problems. Currently there are environmental issues all throughout a tire's lifespan from rubber manufacturing emissions to tire disposal, and the rapidly growing method to evaluate all of these points is Life Cycle Analysis (LCA). LCA is the essential tool required by businesses in order to understand the total environmental impact of their products - cradle-to-grave. By considering the entire life cycle of a
Tweel from manufacturing, through use and disposal, and comparing it to knowledge of current tires, an accurate assessment of the entire environmental impact of the
Tweel will be made. Since the
Tweel is currently still in the research phase and is not currently manufactured and used however, there are uncertainties with respect to end-of-life scenarios and rolling resistance estimates that will affect the LCA. Thus, it will be important to consider a range of options to determine which one will have the most environmental benefits while still keeping the strengths of the
Tweel design intact.
Advisors/Committee Members: Bert Bras (Committee Chair), John Muzzy (Committee Member), Jonathan Colton (Committee Member).
Subjects/Keywords: Environment; Tire; Tweel; Life cycle analysis; Tires Environmental aspects; Life cycle costing
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):
Cobert, A. (2009). Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/37202
Chicago Manual of Style (16th Edition):
Cobert, Austin. “Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis.” 2009. Masters Thesis, Georgia Tech. Accessed January 16, 2021.
http://hdl.handle.net/1853/37202.
MLA Handbook (7th Edition):
Cobert, Austin. “Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis.” 2009. Web. 16 Jan 2021.
Vancouver:
Cobert A. Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis. [Internet] [Masters thesis]. Georgia Tech; 2009. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/1853/37202.
Council of Science Editors:
Cobert A. Environmental comparison of Michelin Tweel and pneumatic tire using life cycle analysis. [Masters Thesis]. Georgia Tech; 2009. Available from: http://hdl.handle.net/1853/37202
. 
Open Access Theses and Dissertations