车轮多边形对地铁车辆动力学性能的影响

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摘 要：基于谐波函数方法来描述车轮多边形，建立地铁车辆动力学仿真模型;分析多边形幅值、阶次对不同速度等级下车辆的动力学性能影响;结合动力学指标着重探讨车轮出现跳轨之后的动力学表现。

关键词：车辆系统动力学 车轮多边形 谐波函数方法

Abstract：The wheel polygon is described based on the harmonic function method， and the dynamic simulation model of the subway vehicle is established; the influence of the polygon amplitude and order on the dynamic performance of the vehicle at different speed levels is analyzed; combined with the dynamic index， dynamic performance is emphatically discussed after wheel jumps.

Key words：vehicle system dynamics， wheel polygon， harmonic function method

随着列车速度的增加，车轮与轨道之间的冲击振动变得越来越强，车轮磨耗速度迅速加剧，问题也变得更加复杂。（剩余6116字）