摘要
建立常用的车辆-轨道耦合动力学分析模型计算轮轨动态相互作用,基于非椭圆接触模型进行轮轨滚动接触分析。选用改进的Archard材料磨损模型计算材料磨耗,分析地铁A型车及B型车的3种车轮镟修踏面分别对小半径曲线外轨侧磨发展的影响。分析结果表明:对每种镟修踏面,钢轨服役的不同时期外轨侧磨增加的速率均不相同,有快有慢;外轨侧磨的发展可大致分为无侧磨阶段、侧磨平稳增长阶段及侧磨极速增长阶段;在后两阶段中,同种镟修踏面侧磨发展趋势近乎相同。对于地铁B型车而言,将车轮镟修成DIN5573型有利于延缓外轨侧磨的发展。
A vehicle-track coupling dynamics analysis model is established to calculate the wheel-rail dynamic interaction.Wheel-rail rolling contact analysis is conducted based on the non-elliptic contact model.Improved Archard material wear model is used to calculate the material wear,to analyze the development of the rail side wear of the three metro wheel treads under the metro type-A and type-B vehicles.The analysis results show that the rate of increase of side wear in different periods of rail service is different;the development of side rail wear of metro outer rail can be roughly divided into three stages:sideless wear,side wear smooth growth and side wear speed increasing.Once the side wear occurs,the side wear strength of the same kind of metro wheel tread develops at similar speed.For the type-B vehicles,lathing the wheel into type DIN5573 will help to delay the development of the side rail wear.
作者
刘杨煜
王少锋
刘林芽
LIU Yangyu;WANG Shaofeng;LIU Linya(School of Civil Engineering and Architecture,East China Jiaotong University,330013,Nanchang,China)
出处
《城市轨道交通研究》
北大核心
2020年第11期84-87,92,共5页
Urban Mass Transit
基金
国家自然科学基金项目(51708221)
江西省自然科学基金项目(20171BAB206055)
江西省教育厅科研基金项目(GJJ150508)。
