摘要
以动力系统的稳定性与分岔理论为基础,导出四轴客车17个自由度的横向振动微分方程,利用Kalker线性蠕滑理论计算轮轨滚动接触蠕滑力,对这一客车系统的蛇行运动稳定性与超高速情况下分岔问题进行了研究.数值结果表明该方法可以得出客车系统蛇行失稳的临界速度,为进一步改善客车横向稳定性性能及设计高速客车走行部提供了理论依据.
Based on the stability quations of four - axis passenger wheel/rail in rolling contact were bifurcation problems at superhigh that the method can obtain the dynamic performance of lateral and bifurcation theory of dynamical system, the lateral vibration differential e- coach, which have 17 degrees of freedom,were derived. The creep forces of approximated by the linear creep theory of Kalker. The hunting stability and the speed of the passenger coach system were analyzed. The numerical results show critical speed of hunting instability, which gives the academic basis to bettering vibration and designing many parts of high - speed passenger coach.
出处
《动力学与控制学报》
2008年第3期202-207,共6页
Journal of Dynamics and Control
基金
教育部"长江学者和创新团队发展计划"(IRT0452)~~
关键词
高速客车
蛇行
稳定性
分岔
临界速度
high - speed passenger coach, hunting, stability, bifurcation, critical speed
