两种快速评价铁路车轮型面磨耗减轻性能的参数及其在型面优化中的应用  

Two Parameters to Quickly Evaluate the Railway Wheel Profile Wear Abatement Performance and Their Application in Profile Optimization

作　　者：李春来 宋庆伟 聂显鹏 高旭[2] 王绪英 王晗 LI Chunlai;SONG Qingwei;NIE Xianpeng;GAO Xu;WANG Xuying;WANG Han(CRRC Changchun Railway Vehicle Co.,Ltd.,Changchun 130062,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中车长春轨道客车股份有限公司,吉林长春130062 [2]西南交通大学轨道交通运载系统全国重点实验室,四川成都610031

出　　处：《铁道车辆》2024年第6期56-64,共9页Rolling Stock

基　　金：青年科学基金项目(52202423)。

摘　　要：评价不同车轮型面的磨耗减轻性能有助于开发新的车轮型面。目前的评价方法主要是建立车辆的多体动力学仿真模型,然后计算在模拟铁路线路上运行时的车轮磨耗指数或材料损耗。这种方法相对准确,但存在计算成本高的问题。因此,开发一种用于快速评估车轮型面磨耗减轻性能的方法很有意义。引入两个参数来快速评估不同型面的磨耗减轻性能,其中一个参数是Polach提出的用于评价接触一致性和踏面磨耗减轻性能的接触集中指数(CCI),另一个参数是接触概率比(CPR),用于评价轮缘的避免接触能力和磨耗减轻性能。在此基础上,将这两个参数引入到车轮型面设计中,提出了基于目标CCI和目标CPR的车轮型面优化方法。长期磨耗模拟进一步证明了该方法的正确性,表明低CCI型面的车轮适用于直线或大半径曲线为主的线路,低CPR型面的车轮适用于小半径曲线较多的线路。Evaluating the wear abatement performance of different wheel profiles is helpful in developing new wheel profiles.The current evaluation method mainly consists of building a multi-body dynamic simulation model of vehicle and then calculating the wheel wear index or material waste during operation on the simulated railway line.This method is relative accurate but the calculation cost is high.Therefore,developing a method that can quickly evaluate the wheel profile wear abatement performance is significant.This article introduces two parameters to quickly evaluate the wear abatement performance of different profiles:one is the contact concentration index(CCI)proposed by Polach to evaluate the contact consistency and the tread wear abatement performance;the other is the contact probability ratio(CPR)to evaluate the contact avoiding capability and the wear abatement performance of the wheel flange.On this basis,the two parameters are introduced into the design of wheel profiles,and the wheel profile optimization method based on the objective CCI and the objective CPR is proposed.The long-term wear simulation further proves the correctness of this method,showing that the wheel with a low-CCI profile is applicable to the line dominated by straight lines or large-radius curves,while the wheel with a low-CPR profile is applicable to the line dominated by small-radius curves.

关 键 词：接触集中指数 接触概率比 轮缘磨耗 磨耗减轻性能 型面优化 

分 类 号：U270.331[机械工程—车辆工程]