摘要
研究汽车轮胎减少磨损,延长使用寿命的问题,轮胎多边形磨损与胎面质量块的侧向自激振动密切相关。了解产生自激振动的速度区间以及胎面与地面的摩擦状态就显得十分重要。因此建立了轮胎—地面系统的理论模型,引入符合轮胎橡胶摩擦规律的摩擦曲线。运用有限元软件,建立了轮胎与地面有限元模型,导入上述摩擦曲线,分析了位移时间历程和位移速度相平面图,发现了容易产生自激振动的速度区间。选择三种特征车速进行仿真。结果证明通过研究可以减少轮胎的磨损量,延长寿命,为今后轮胎多边形磨损正确建模有参考价值。
We found that tire Polygonal wearing had a close relation with its lateral self-excited vibration based on our former research.It is essential to study the self-excited vibration speed range and friction condition.Hence one tire-ground system theory modal was established.A friction modal which complied with the tire rubber friction law was introduced.Tire-ground FE model was simulated at three vehicle speeds using FE software,into which the friction curve was imported.Their displacement-time histories and displacement-velocity phase plates were analyzed and a self-excited vibration speed range was found.Furthermore,friction force-time history at one speed was analyzed in frequency domain.It was summarized that friction force SHG was closely related to the relative slip velocity.It made great significance to Polygonal wear model construction for further research.
出处
《计算机仿真》
CSCD
北大核心
2011年第2期368-372,共5页
Computer Simulation
基金
国家自然科学基金(50775162)
关键词
自激振动
轮胎
橡胶
有限元
Self-excited vibration
Tire
Rubber
Finite element method
