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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Non-linear vehicle—track interaction in consideration of vertical and lateral dynamics
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Non-linear vehicle—track interaction in consideration of vertical and lateral dynamics

机译：考虑垂直和横向动力学的非线性车辆-轨道相互作用

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The main goal is the investigation of the high frequency vehicle track interaction in view of non-linear corrugation growth. The ideal smooth surface of rail is disturbed by a so-called profile irregularity. Even small amplitudes of profile irregularity can lead to large fluctuations of contact forces in respect to the reference state or the average value, respectively. That is why it is necessary to use non-linear contact mechanics. The method presented here considers the non-linear shift of contact point and operates with a simplified, non-linear contact mechanics. The principal restrictions are, that all non-linarities are located in the contact point and by now only stationary tangential contact is treatable. The subsystems vehicle and track are described by linear models which are connected by nonlinear vertical, lateral and longitudinal contact forces. To determine the linear displacements of wheel and rail an ANALYTICAL TIME STEP INTEGRATION SCHEME is used. A NEWTON-METHOD is applied for an iterative adaption of the non-linear contact forces.
机译：主要目标是鉴于非线性波纹的增长，研究高频车辆轨道的相互作用。轨道的理想光滑表面会受到所谓的轮廓不规则性的干扰。甚至轮廓不规则性的较小幅度也可能导致接触力相对于参考状态或平均值的较大波动。这就是为什么必须使用非线性接触力学的原因。这里介绍的方法考虑了接触点的非线性位移，并以简化的非线性接触机制进行操作。主要的限制条件是，所有非直线度都位于接触点中，并且现在只能处理固定切向接触。子系统的车辆和轨道由线性模型描述，线性模型通过非线性的垂直，横向和纵向接触力连接。为了确定车轮和轨道的线性位移，使用了分析时间步积分方案。 NEWTON-METHOD用于迭代调整非线性接触力。

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