摘要
自激振动是多边形磨损的必要条件,根据附着椭圆,驱动力对胎面侧向附着系数有很大的影响,从而改变了轮胎侧向自激振动情况。建立基于LuGre摩擦模型的胎面-路面单自由度系统,通过MATLAB/Simulink进行仿真实验,并分别以车速和摩擦系数作为分岔参数对系统进行Hopf分岔分析,分析了驱动轮胎面侧向自激振动产生的临界条件。研究表明小侧偏角下,驱动力使得胎面侧向自激振动消失。研究结果为多边形磨损机理的进一步研究提供了理论依据。
Self-excited vibration is necessary to form polygonal wear of a tyre. According to a friction ellipse, a driving force has great effect on type lateral adhesion coefficient and it changes lateral vibration of a type. A single DOF model of type-road surface based on LuGre friction model was established. Then, the system was analyzed with driving speed and friction coefficient being bifurcation parameters and the critical conditions for self-excited vibration of the driving wheel were studied. The results showed that the driving force causes disappearance of self-excited vibration in the case of small side angle.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第22期101-104,111,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(50775162
50575163)
