HXD3D机车轮轨滚动接触有限元仿真  

Finite Element Simulation of Wheel-Rail Rolling Contact of HX D3D Locomotive

作　　者：巨继文 商跃进[1] 张涛[1] 李娜 雪明翔 JU Ji-wen;SHANG Yue-jin;ZHANG Tao;LI Na;XUE Ming-xiang(School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《机械研究与应用》2023年第5期123-127,共5页Mechanical Research & Application

基　　金：兰州交通大学天佑创新团队资助项目:高速动车组车辆构造与设计系列课程(编号:TY202006);甘肃省青年基金项目:长期服役下重载机车齿轮传动系统振动特征演变规律研究(编号:20JR10RA260)。

摘　　要：为了研究兰州局HXD3D型机车在兰新线、兰青线高寒高原复杂线路上运行时出现的剥离、粘连、车轮不圆等问题,利用瞬态三维有限元方法进行了轮轨静态接触和轮轨滚动接触分析,揭示了车轮横移量、轴重等因素对轮轨滚动接触部位、轮轨接触等效应力的影响规律。计算结果表明:接触面积随横移量的变化曲线与接触斑横向长度随横移量的变化曲线有相同的变化规律,当轴重在一定基础上继续增加时,车轮踏面内外应力增长速度较慢,接触面积的增长速度较快。轮轨滚动过程中,随着轴重载荷的增加,车轮整体范围内所受等效应力随之增加且有明显的变化,钢轨所受等效应力变化很小。研究结果为减少镟修成本和保障机车安全运行提供了可靠的理论依据。The wheel-rail static contact and wheel-rail rolling contact analysis are carried out by using the transient three-dimensional finite element method to study the problems of peeling,adhesion,and non-roundness of wheels of HX D3D locomotive running on the complex line of Lanxin line and Lanqing line on the high and cold plateau;and the influence rule of wheel traverse amount,axle load and other factors on wheel-rail rolling contact parts and wheel-rail contact is revealed.The calculation results show that the variation curve of the contact area with lateral displacement has the same variation law as the variation curve of the contact spot's transversal length with lateral displacement.When the axle load continues to increase consistently,the internal and external stress of the wheel tread grows relatively slowly,while the contact area grows relatively quickly.During the wheel-rail rolling process,the equivalent stress of wheel in the overall range increases and changes significantly with the increase of axle load,whereas the equivalent stress of the rail changes little.The research findings provide a solid theoretical foundation for lowering the cost of rotary repair and ensuring the locomotive safety.

关 键 词：HXD3D机车 轮轨滚动接触 接触应力 有限元仿真 

分 类 号：U264.8[机械工程—车辆工程]