高速铁路车轮与钢轨型面匹配分析

Matching analysis of wheel and rail profile of high-speed railway

根据我国高速铁路多种钢轨型面在线路中的使用情况,建立车辆动力学模型,研究不同磨耗阶段S1002CN车轮与3种钢轨型面(CHN60轨、60D轨和60N轨)的动力学匹配问题,分析轮轨接触几何关系、运行平稳性、振动幅频特性和磨耗数等动力学评价指标。结果表明:当60D轨和60N轨与标准S1002CN车轮匹配、车轮横移量在±12 mm时,接触点位置仍在轨顶附近,比CHN60轨对中性好;当60D轨和60N轨与不同磨耗阶段S1002CN车轮匹配时,横向、垂向振动主频率均低于CHN60轨匹配情况,平稳性相对较优;60N轨与不同磨耗阶段车轮匹配最大磨耗数和总磨耗数均低于其他2种钢轨,更适应各磨耗阶段S1002CN车轮,具有良好的匹配性和经济性。

According to the application of various rail profiles in high-speed railway in China,the vehicle dynamics model was established to study the dynamic matching between S1002CN wheel and three rail profiles(CHN60,60D and 60N rails)in different abrasion stages.The dynamic evaluation indexes such as wheel rail contact geometry,running stability,vibration amplitude frequency characteristics and abrasion number were analyzed.The results show that when the 60D and 60N rail are matched with the standard S1002CN wheel and the wheel displacement is within±12 mm,the contact point is still near the rail top,which is better than that of CHN60 rail for neutral.When the 60D and 60N rail are matched with S1002CN wheel in different abrasion stages,the main frequency of lateral and vertical vibration is lower than that of CHN60 rail,and the stability is relatively better.When the 60N rail is matched with the wheel in different abrasion stages,the main frequency of lateral and vertical vibration is lower than that of CHN60 rail.And the maximum and total abrasion number are lower than the other two kinds of rails,which are more suitable for S1002CN wheels in each abrasion stage,with good matching and economy.