车轮非圆化磨耗对机车轮轨系统动态响应的影响  

Research on Dynamic Response of Locomotive Wheel/RailSystem Caused by Polygonal Wear

作　　者：苏明亮[1] 郭林[1] 凌亮[2] 王开云[2] SU Mingliang;GUO Lin;LING Liang;WANG Kaiyun(Shuohuang Railway Development Co.,Ltd.,Suning Hebei 062350,China;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu Sichuan 610031,China)

机构地区：[1]朔黄铁路发展有限责任公司,河北肃宁062350 [2]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《润滑与密封》2020年第12期103-108,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(51825504).

摘　　要：对频繁发生振动报警问题和运营正常的某型号电力机车分别进行车轮非圆化磨耗测试,对比分析运营正常和发生异常振动报警车轮的非圆化磨耗特征。测试结果表明:运营正常的机车车轮非圆化磨耗形式主要以低阶为主,而频繁发生振动报警的机车车轮非圆化磨耗除低阶磨耗外,还存在明显的16~25阶非圆化磨耗,这是造成机车异常振动的根本原因。建立机车车辆-有砟轨道耦合动力学模型,研究车轮非圆化磨耗对轮轨动态相互作用的影响,系统地调查分析轮轨动态相互作用随车轮非圆化磨耗特征的变化规律。结果表明:严重的车轮非圆化磨耗会加剧轮轨动态冲击作用,轮轨系统动力学响应随非圆化磨耗幅值的增大而增大,但随非圆化磨耗阶次的增长而呈非线性变化趋势。Out-of-roundness(OOR)wear tests on two chosen locomotives were conducted,one of them suffered frequent alarms while the other operated normally.The OOR wear wear characteristics of normal and abnormal vibration alarm wheels were compared and analyzed.The test results show that low-order OOR wear is the primary abrasion pattern of normal-operated locomotive wheels.However,the wheels experienced frequent occurrence of abnormal vibration contains obvious OOR wear from 16 to 25th order in addition,which is the main root of abnormal vibration of locomotives.The locomotive/ballast track coupled model was established,the effect of OOR wear on the dynamic interactions of wheel/rail system was investigated,and the variation of dynamic response of wheel/rail with respect to the basic feature of polygonal wear was studied systematically.The research results indicate that the impact between wheel and rail will intensify under excitation of severe OOR wear,the dynamic response is increased with the increase of wear amplitude,but presents a non-linear trend with the increase of wear order.

关 键 词：电力机车 非圆化磨耗 异常振动 耦合动力学 动态响应 

分 类 号：U260.33[机械工程—车辆工程] TH117.1[交通运输工程—载运工具运用工程]