中文摘要：

为了研究高速列车车轮磨耗问题,建立了车辆多体系统动力学和车轮磨耗耦合模型.模型中考虑了车辆系统悬挂非线性、轮轨接触几何非线性和轮轨蠕滑力非线性.采用数值仿真方法研究车轮型面的磨耗分布和发展.考虑车辆通过一条由直线和不同曲线组成的典型线路,通过动力学仿真计算轮轨接触情况,采用FASTSIM计算轮轨接触斑上车轮磨耗量,进行车轮型面磨耗量的累积和型面外形更新,然后再进入下一个磨耗循环的计算.通过比较分析,选择车轮型面垂直磨耗0.1mm为型面更新的条件,分别采用Archard磨耗模型、基于摩擦功的磨耗模型和基于磨耗指数的磨耗模型来预测车轮型面磨耗发展情况.并与测量得到的车辆实际线路运行中车轮磨耗量进行了比较.结果表明,仿真得到的车轮型面磨耗发展情况和实际测量结果趋势相同,其中基于磨耗功和磨耗指数模型的计算结果接近,而Archard模型算得的轮缘磨耗相对较大.因此,可以根据具体线路有针对性地选择磨耗模型,通过仿真方法预测车轮型面的磨耗,为高速列车的安全可靠运行提供指导.

英文摘要：

In order to study the wheel wear problem of high-speed train,the coupled model of vehicle multi-body dynamics and wheel wear was set up. The nonlinearities arising from the vehicle suspension system,wheel/rail contact geometry and wheel/rail creep force were considered in the model. The numerical simulation method was used to predict the distribution and development of wheel profile wear. The vehicle passing through a length of typical track that was composed of several straight lines and different curved lines was taken into account. The dynamic simulation was used to obtain the wheel/rail contact state. FASTIM was adopted to calculate the wheel wear on wheel/rail contact patch. The wear volume on wheel profile was accumulated and the shape of wheel profile was updated. Then,the next wear simulation cycle can be carried out. Through comparison and analysis,the wheel profile was updated when the vertical wear depth reached 0.1 mm. The Archard wear model,wear model based on wear energy and wear model based on wear index were utilized respectively to predict the development of wheel profile wear,and the measured wheel wear of the vehicle running on actual lines was compared with the simulation results. It can be seen that the simulated wheel wear development had the same tendency with the measured results. The calculation results by the wear energy model and wear index model were similar,while the wheel flange wear calculated by the Archard model was relatively large. Therefore,the efficient wear model should be selected according to the actual track line,and the wheel profile wear can be predicted by the use of simulation method and that can provide the guidance for the safe and reliable operation of high speed trains.