考虑研磨子——车轮和轮轨作用的城际动车组车轮磨耗预测  

WEAR PREDICTION OF INTER-CITY EMU WHEELS IN CONSIDERATION OF TREAD TRIMMER-WHEEL AND WHEEL-RAIL INTERACTIONS

作　　者：赵长雨 赵鑫[1] 王鹏[1] 沈正行 温泽峰[1] ZHAO Chang-yu;ZHAO Xin;WANG Peng;SHEN Zheng-hang;WEN Ze-feng(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《工程力学》2023年第1期229-237,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(52027807);四川省科技计划项目(2020YFQ0024);牵引动力国家重点实验室自主课题项目(2019TPL_T17)。

摘　　要：针对站间距短、研磨子频繁作用的城际铁路,建立了集车辆系统动力学、研磨子―车轮接触和车轮磨耗等模型于一体的动车组车轮磨耗预测模型,车轮磨耗采用Archard模型计算,实现了研磨子―车轮和轮轨接触对车轮磨耗贡献的定量预测。以中国南方某城际线路上运行的某型城际动车组为例,模拟了动车组车轮LM廓形在一个车轮镟修周期内的演化,通过对比跟踪测试结果,确定研磨子所致车轮磨耗的磨耗系数取1.45×10^(-4),并完成了模型验证。上述城际铁路的模拟结果显示,该模型的车轮磨耗预测误差仅为5.00%。以0.30 MPa工作气压下的高硬度研磨子为例,发现其最佳工作模式为“工作20 s—停止工作25 s”的间歇式工作模式。为动车组研磨子系统的优化设计提供有效模拟工具。On inter-city railways,the distances between stations are normally short,so that tread trimmers often operate during daily running of EMUs(Electric Multiple Units).To predict the wear of inter-city EMU wheels,a wear model integrating models of vehicle system dynamics,tread trimmer-wheel contact and wheel wear is developed,in which the wheel wear is calculated using Archard wear model,and the wear contribution of the tread trimmer-wheel interaction is distinguished from that of wheel-rail interaction.Simulating an EMU running on an inter-city line in south China,the evolution of LM wheel profile is predicted for a re-profiling period of wheels,based on which the wear coefficient related to trimmer-wheel contact is determined to be 1.45×10^(-4)and the model is validated through comparing to the results of monitoring tests.Prediction results have shown that the prediction error of wheel wear is just 5.00%.Taking a type of hard trimmer operating with an air pressure of 0.30MPa as an example,an optimal working mode of the trimmer is figured out,i.e.,the intermittent operation of“working 20 s–stopping 25 s”.Such a wheel wear model provides an effective tool for the optimization of the trimmer system equipped on EMUs.

关 键 词：载运工具运用工程 车轮磨耗 磨耗预测 城际动车组 研磨子 研磨子作用模式 

分 类 号：U270.2[机械工程—车辆工程]