Title: Stochastic transient tyre model for vehicle dynamic simulations on rough rigid ground

Authors: Anake Umsrithong; Corina Sandu

Addresses: Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA. ' Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA

Abstract: The goal of this study was to develop a tyre model able to capture the tyre dynamic behaviour while traversing over an uneven rigid surface. Further, since the tyre model was intended to be used in vehicle dynamic simulations, to preserve its computational speed close to that of the vehicle model, a simplified tyre model with empirical data was proposed. The proposed tyre model takes advantage of modelling the wheel-tyre assembly as a single point contact model, in certain situations, and combining this approach with a more complex model. Moreover, for the short wavelength surface, the tyre enveloping property has been shown to have significant effects on tyre behaviour and is taken into account in this study. To account for the tyre parameter uncertainties, the deterministic model has been extended to a stochastic one, using a polynomial chaos methodology. Simulation results for selected ground profiles are presented. The results were compared with available data from the literature.

Keywords: tyre modelling; stochastic parameters; enveloping property; rigid ground; rough terrain; vehicle simulation; dynamic modelling; wheel-tyre assembly; parameter uncertainties.

DOI: 10.1504/IJVSMT.2012.049432

International Journal of Vehicle Systems Modelling and Testing, 2012 Vol.7 No.4, pp.351 - 371

Received: 26 Jul 2011
Accepted: 26 Mar 2012
Published online: 13 Sep 2014 *

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