Open Access Theses and Dissertations

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You searched for subject:(Non pneumatic tire). Showing records 1 – 3 of 3 total matches.

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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 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

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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 20, 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. 20 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 20]. 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


Brno University of Technology

2. Hanus, Jan. Airless pneumatiky: Airless Tires.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/67503 

The aim of this bachleor thesis was describing options of constructing the airless tire with inner structure, finding out its properties and comparision with conventional tire. The first part deals with the historical development of the airless tire structure. The second part describes ways to design the inner structure with focus on the honeycomb type. The comparison of airless and conventional tire properties is stated in the end of this bachleor thesis. Advisors/Committee Members: Molliková, Eva (advisor), Pacal, Bohumil (referee).

Subjects/Keywords: Airless pneumatika; bezvzdušná pneumatika; NPT; defekt; voštinová struktura; Airless tire; Non pneumatic tire; NPT; defect; honeycomb structure

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hanus, J. (2019). Airless pneumatiky: Airless Tires. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/67503

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):

Hanus, Jan. “Airless pneumatiky: Airless Tires.” 2019. Thesis, Brno University of Technology. Accessed January 20, 2021. http://hdl.handle.net/11012/67503.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Hanus, Jan. “Airless pneumatiky: Airless Tires.” 2019. Web. 20 Jan 2021.

Vancouver:

Hanus J. Airless pneumatiky: Airless Tires. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/11012/67503.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hanus J. Airless pneumatiky: Airless Tires. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/67503

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Clemson University

3. Proddaturi, Amarnath. ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION.

Degree: MS, Mechanical Engineering, 2009, Clemson University

URL: https://tigerprints.clemson.edu/all_theses/725 

During rolling of a non-pneumatic tire, 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. Other potential sources of vibration include the interaction of tire tread with the ground and ring vibration. In the present work, a systematic study of the effects of key geometric design parameters is presented using Taguchi's Robust Parameter Design Method and Orthogonal Arrays. In the present work, a 2D planar finite element model with geometric non-linearity and explicit time-stepping is used to simulate rolling of the non-pneumatic tire. 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, ground reaction forces, and ring vibration. Both maximum peak amplitudes and RMS measures are considered resulting in a total of five output measures which are to be reduced for evaluated optimal design combinations. In the initial study, two different L8 orthogonal arrays are considered, one with both spoke and ring parameters, and the other, which focuses on only ring variables and interactions between them. Based on the results from the initial study, an L27 orthogonal array, which combines all key geometric variables and includes the effects of uncontrollable noise factors of rolling speed and ground push up, is analyzed for robust parametric design. Since there are more than one set of noise factor combinations, Signal-to-Noise (S/N) ratios with Analysis of Variance (ANOVA) methods are used to determine percent contributions and predict the optimal combination level for each control factor, for all vibration measures. Advisors/Committee Members: Thompson, Lonny L, Ziegert , John C, Joseph , Paul F.

Subjects/Keywords: NON-PNEUMATIC TIRE; Orthogonal Array; Signal-to-Noise Ratio; Engineering Mechanics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Proddaturi, A. (2009). ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/725

Chicago Manual of Style (16th Edition):

Proddaturi, Amarnath. “ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION.” 2009. Masters Thesis, Clemson University. Accessed January 20, 2021. https://tigerprints.clemson.edu/all_theses/725.

MLA Handbook (7th Edition):

Proddaturi, Amarnath. “ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION.” 2009. Web. 20 Jan 2021.

Vancouver:

Proddaturi A. ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION. [Internet] [Masters thesis]. Clemson University; 2009. [cited 2021 Jan 20]. Available from: https://tigerprints.clemson.edu/all_theses/725.

Council of Science Editors:

Proddaturi A. ROBUST PARAMETER DESIGN AND FINITE ELEMENT ANALYSIS FOR A NON-PNEUMATIC TIRE WITH LOW VIBRATION. [Masters Thesis]. Clemson University; 2009. Available from: https://tigerprints.clemson.edu/all_theses/725

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