Title: Regeneration of the road profile to compensate tyre nonlinearity for virtual testing

Authors: Jeong-Hyun Sohn, Kwang-Suk Kim, Jeong-Han Lee, Wan-Suk Yoo

Addresses: Pukyong National University, Pusan, South Korea. ' Department of Automobile Engineering, INHA Technical College, Inchon, South Korea. ' School of Mechanical Engineering, Pusan National University, Pusan, South Korea. ' School of Mechanical Engineering, Pusan National University, Pusan, South Korea

Abstract: In vehicle driving simulations, modelling the tyre precisely is not easy due to the nonlinear effects of tyre deformation. Instead of precise tyre modelling, this paper proposes to regenerate the road profile, which preserves the measured wheel accelerations with a linear tyre model in computer simulations. Frequency response functions between the road and the wheel are used to regenerate the road profile. The error function between the experimental results and the simulation results is defined, and a new road profile is generated by iteration to reduce the error function. From the full car example, the proposed method in this paper shows very good results, and thus the new method seems well suited in virtual driving simulations.

Keywords: virtual testing; regeneration of road profile; computer simulation; frequency response function; tyre modelling; vehicle simulation; driving simulation.

DOI: 10.1504/IJVD.2004.004949

International Journal of Vehicle Design, 2004 Vol.35 No.3, pp.210 - 223

Published online: 26 Jul 2004 *

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