中文摘要：

将我国高速铁路常用车轮的原始型面（S1002CN,LMA和XP55）及运行20万km后的磨耗型面（S1002CN_ 20,LMA_20和XP55_20）分别与CHN60钢轨进行匹配,分析轮对内侧距和摇头角的变化对轮轨接触几何关系的影响规律.在此基础上,采用Archard磨耗模型和滚动接触疲劳模型并结合车辆动力学模型,建立车轮磨耗疲劳预测模型,对不同型面车轮的磨耗和滚动接触疲劳进行研究和预测.结果表明：S1002CN型面车轮的轮轨接触几何关系对车轮磨耗、轮对内侧距和摇头角的变化最为敏感,该型面车轮的最大磨耗深度最大且范围最广;XP55型面车轮的磨耗范围最小,LMA型面车轮的最大磨耗深度最小;XP55型面车轮的轮轨接触应力较大,经过曲线线路时易发生高周疲劳现象,但这种现象在车轮磨耗后消失;S1002CN和LMA型面车轮的轮轨接触应力较小,但在车轮磨耗后轮轨的接触应力明显增大,易发生高周疲劳.

英文摘要：

High-speed railway commonly used wheels with the original profile （S1002CN,LMA and XP55） and the worn profile （S1002CN _ 20,LMA _ 20 and XP55 _ 20） after running 200 000 km matched respectively with CN60 rail,the influence of wheelset back-to-back space and yaw angle on wheel-rail contact geometry relationship was analyzed.On this basis,wheel wear and fatigue prediction models were established by Archard wear model and roiling contact fatigue model combined with vehicle dynamics model to study and predict the wear and rolling contact fatigue for wheels with different types of profile.The results show that the wheel-rail contact geometry relationship of S1002CN is the most sensitive to the change of wheel wear,wheelset back-to-back space and yaw angle,moreover,the maximum wear depth is the largest and the wear range is the widest.The wear range of XP55 profile wheel is minimum and the maximum wear depth is minimum on wheels with LMA profile.Wheel-rail contact stress is the largest on XP55 profile wheels.XP55 profile wheels are prone to high-cycle fatigue phenomenon when thevehicle negotiating a curve,but this phenomenon disappears after wheel wear.Wheel-rail contact stress is smaller on S1002CN and LMA profile wheels,but after wheel wear,the wheel-rail contact stress significantly increases and these two kinds of wheels are prone to high-cycle fatigue.