Analysis of bifurcation parameters in tire's self-excited vebration

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (2) : 15-19,9.

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Analysis of bifurcation parameters in tire's self-excited vebration

YANG Xian-Wu; ZUO Shu-guang; LEI lei; WU Xu-dong; LI Yong

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Abstract

How to avoid the irregular wear of tire is one of the most pressing problems to be solved in the process of a vehicle’s research and design, and the self-excited vibration of tread is one of the important factors in tire's irregular wear. Considering the nonlinear characteristic of tire’s grounding friction, a dynamic vibration model of the tire, taking time-delay into account, is established, using Lugre friction model. The sensitive parameters and speed range which can motivate self-excited vibration are calculated，as well as the phenomenon of hard self-excited vibration are proved to be reasonable at high speed after simulating in matlab/simulink. A conclusion that tread is more prone to the phenomenon of self-excited with more load, less mass of grounding tread and bigger toe angle is gained by means of varying the sensitive parameters. The dynamic vibration model can provide a theoretic foundation to reduce or eliminate the tire's self-excited vibration.

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friction coefficient / self-excited vibration / Hopf bifurcation / limit cycle

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YANG Xian-Wu;ZUO Shu-guang;LEI lei;WU Xu-dong;LI Yong. Analysis of bifurcation parameters in tire's self-excited vebration[J]. Journal of Vibration and Shock, 2012, 31(2): 15-19,9