钢轨波磨对高速列车车轮多边形磨耗产生与发展的影响  

Effect of Rail Corrugation on Initiation and Development of Polygonal Wear on High-speed Train Wheels

作　　者：吴越[1] 韩健 左齐宇 金学松[1] 肖新标[1] 梁树林[1] WU Yue;HAN Jian;ZUO Qiyu;JIN Xuesong;XIAO Xinbiao;LIANG Shulin(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031;College of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031)

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]西南交通大学机械工程学院,成都610031

出　　处：《机械工程学报》2020年第17期198-208,共11页Journal of Mechanical Engineering

基　　金：国家自然科学基金(U1734201,U1934203,51805450);四川省科技计划(2020YJ0254,2020YJ0076);西南交通大学博士研究生创新基金资助项目。

摘　　要：列车车轮多边形磨耗问题广泛存在于我国高速列车上,会显著增大轮轨之间的相互作用力,严重影响列车运行安全性和舒适性,其产生和发展机理值得探究。车轮多边形磨耗与钢轨波浪形磨损(简称:波磨)从磨耗特征来看较为相似,只是发生磨耗的载体不同,钢轨波磨是否对车轮多边形磨耗存在根本的影响值得深入研究。以我国某线路上运行的高速动车组列车为研究对象,通过建立车轮多边形磨耗仿真预测模型,结合现场试验数据,调查钢轨波磨对车轮多边形磨耗产生和发展的影响。研究表明,钢轨波磨虽然可以导致轮轨力和蠕滑率等磨耗关键参数沿车轮圆周发生周期性波动,但是在车辆实际运营条件下,钢轨波磨导致车轮多边形磨耗产生这一观点的成立条件极为"苛刻",对车轮和钢轨波磨区段起始点的接触位置、钢轨波磨的波长以及车轮周长都有严格的要求。在实际中该条件难以满足。因此,钢轨波磨的存在并不是车轮多边形产生的根本原因。结果可为高速列车车轮多边形形成机理的相关研究提供参考和指导。The polygonal wear of train wheels occurs in rail transport commonly and will increase the wheel-rail interaction force dramatically and have a bad effect on the safety and comfort of the train.The mechanism of the polygonal wear needs to be studied.The polygonal wear looks like the corrugated wear of rail,the former occurs on wheels and the later occurs on rails.So,the relationship between the rail corrugation and polygonal wear deserves further study.The polygonal wear prediction model is developed to study the effect of rail corrugation on initiation and development of polygonal wear.The research shows that the rail corrugation can lead to the periodic fluctuation of key wear parameters such as wheel rail normal force and creep slip rate along the wheel circumference.But,restricted by the randomness of the position of the wheel-rail contact point,the wavelength of the rail corrugation and the circumference of the wheels,it is hard to say that the rail corrugation lead to the polygonal wear on wheels.And the rail corrugation is not the root cause of the polygonal wear on wheels.The results obtained in this investigation may be helpful for the further study on the mechanism of polygonal wear of the wheels.

关 键 词：车轮多边形磨耗 钢轨波磨 高速列车 车辆轨道耦合动力学模型 机理 

分 类 号：U270[机械工程—车辆工程]