轮轨摩擦碰撞及脱轨的研究  

Study on Frictional Impact and Derailment for Wheel and Rail

作　　者：曾京[1] 胡松[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《振动工程学报》2001年第1期1-6,共6页Journal of Vibration Engineering

基　　金：国家科委"九五"攻关资助项目! (编号 :96 - A0 7- 0 1- 0 2 )

摘　　要：研究了轮轨的三维摩擦碰撞问题 ,建立了碰撞动力学模型 ,导出了碰撞过程轮轨接触点切向运动的解析式和车轮跳起高度的表达式 ,推导了轮轨二维摩擦碰撞脱轨的判别准则。最后 ,对轮轨碰撞脱轨进行了实例计算 ,分析了轮对的横向冲击速度、摇头角、轮缘角。The three dimensional impact with friction between wheel and rail is studied and the impact dynamic model is set up. The analytic solutions for the tangential motion of the wheel/rail contact point and the jumping height of the wheel are derived. The derailment criterion for wheel/rail two dimensional frictional impact is also given. Finally computations are carried out for an actual wheel/rail impact problem. The influences of wheelset lateral impact velocity, yaw angle, flange angle, wheel/rail friction coefficient and vertical force to wheelset derailment are analysed.

关 键 词：碰撞力学 轮轨关系 脱轨稳定性 

分 类 号：U270.1[机械工程—车辆工程]