基于轮轨型面匹配数值模拟的地铁车轮异常磨耗原因分析  

Investigation on Abnormal Wear of Metro Wheels through Simulations of Wheel/Rail Profile Matching

作　　者：任德祥 陶功权[1] 李伟[1] 陆文教 温泽峰[1] 金学松[1] REN Dexiang;TAO Gongquan;LI Wei;LU Wenjiao;WEN Zefeng;JIN Xuesong(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031;Guangzhou Metro Group Co.,Ltd.,Guangzhou 510330)

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]广州地铁集团有限公司,广州510330

出　　处：《机械工程学报》2022年第10期191-199,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51605395);四川省区域创新合作(2020YFQ0024);四川省科技计划(2020YJ0311)资助项目。

摘　　要：通过线路测试和数值仿真对某B型地铁列车车轮异常磨耗现象进行深入分析。结合轮轨接触几何关系和轮轨滚动接触理论进行轮轨静态接触分析;基于UM软件建立该地铁车辆动力学仿真模型和磨耗预测模型,计算轮对运动状态和车轮磨耗水平。通过对比不同轮轨匹配的仿真结果来分析该地铁车辆发生轮缘和踏面异常磨耗的原因,进而提出相应的控制措施。结果表明,该地铁线路小半径曲线占比较大且钢轨轨底坡异常。地铁车辆轮缘和踏面异常磨耗是由较大轨底坡线路条件下轮轨型面匹配关系不合理所导致。将全线轨底坡修正成1/40对车轮异常磨耗现象的减缓效果有限。为有效减轻该地铁车辆车轮异常磨耗,可考虑将车轮踏面外形由S1002镟修为LM。The wheel abnormal wear of a certain B-type metro train is analyzed in detail by means of field experiments and numerical simulation.The wheel/rail static contact is analyzed based on wheel/rail contact geometry relationship and wheel/rail rolling contact theory.The vehicle dynamics simulation model and wheel wear prediction model of the metro are built with UM,moreover the wheelset motion and wheel wear are calculated.The cause of abnormal wear on wheel flange and tread is analyzed by comparing the simulation results of different wheel/rail matching.Furthermore,the corresponding control measures are put forward.The results show that the investigated metro line has a large proportion of small-radius curve as well as an abnormal rail cant.The main cause of abnormal wear is the improper matching of wheel and rail profile at the large rail cant.It has a limited effect on improving wheel abnormal wear to modify the rail cant of the whole line to 1/40.In order to effectively mitigate wheel abnormal wear of the metro vehicle,changing the wheel profile from S1002 to LM when turning wheels should be considered.

关 键 词：地铁车轮 异常磨耗 轮轨滚动接触 车辆动力学 轨底坡 

分 类 号：U211[交通运输工程—道路与铁道工程]