dc.contributor.author	Umsrithong, Anake	en
dc.contributor.committeechair	Sandu, Corina	en
dc.contributor.committeemember	Ferris, John B.	en
dc.contributor.committeemember	Chan, Brendan Juin-Yih	en
dc.contributor.committeemember	Sandu, Adrian	en
dc.contributor.committeemember	Taheri, Saied	en
dc.contributor.department	Mechanical Engineering	en
dc.date.accessioned	2014-03-14T20:07:41Z	en
dc.date.adate	2012-03-30	en
dc.date.available	2014-03-14T20:07:41Z	en
dc.date.issued	2012-02-10	en
dc.date.rdate	2012-03-30	en
dc.date.sdate	2012-02-21	en
dc.description.abstract	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.	en
dc.description.degree	Ph. D.	en
dc.identifier.other	etd-02212012-204837	en
dc.identifier.sourceurl	http://scholar.lib.vt.edu/theses/available/etd-02212012-204837/	en
dc.identifier.uri	http://hdl.handle.net/10919/26270	en
dc.publisher	Virginia Tech	en
dc.relation.haspart	Umsrithong_A_D_2012.pdf	en
dc.relation.haspart	Figure_2_6_Fair_Use.pdf	en
dc.relation.haspart	Figure_2_5_Fair_Use.pdf	en
dc.relation.haspart	Figure_2_1_Fair_Use.pdf	en
dc.relation.haspart	Figure_2_2_Fair_Use.pdf	en
dc.relation.haspart	Figure_2_4_Fair_Use.pdf	en
dc.rights	In Copyright	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject	tire model	en
dc.subject	uncertainties	en
dc.subject	vehicle dynamics	en
dc.title	Deterministic and Stochastic Semi-Empirical Transient Tire Models	en
dc.type	Dissertation	en
thesis.degree.discipline	Mechanical Engineering	en
thesis.degree.grantor	Virginia Polytechnic Institute and State University	en
thesis.degree.level	doctoral	en
thesis.degree.name	Ph. D.	en

Deterministic and Stochastic Semi-Empirical Transient Tire Models

Files

Original bundle

Collections