西南交通大学学报2025，Vol.60Issue(2)：336-345,10.DOI:10.3969/j.issn.0258-2724.20220876
高寒动车组温变特性对运行性能的影响分析
Influence of Temperature-Varying Characteristics on Operating Performance of Alpine Electric Multiple Units
摘要
Abstract
The service environment of alpine electric multiple units(EMUs)is affected by temperature for a long time,and the vehicle suspension element parameters and under-rail parameters have strong seasonal variation characteristics.To investigate the influence of temperature-varying characteristics of rubber elements on the operating performance of alpine EMUs,a multi-body dynamics model of alpine EMUs was established to analyze the vehicle dynamics characteristics under different temperatures.Then,the wheel wear characteristics at different temperatures were analyzed by the Jendel wear model.Finally,the wheel surface fatigue index was proposed based on the fatigue prediction model.The results show that the temperature variation will change the stiffness and damping value of suspension parameters,and the stiffness of suspension parameters increases as the temperature decreases.The dynamic performance of the EMUs decreases at low temperatures.The wear of the vehicle increases as the temperature decreases.After 200 000 miles of operation,the largest depth of wheel wear is found at a temperature of-40℃,which is 6.2%greater than the depth of wheel wear at a temperature of 20℃.The surface contact fatigue index gradually increases as the temperature decreases,with wheel surface fatigue indexes being 6.4648×10-4,6.6150×10-4,and 6.7885×10-4 at temperatures of 20℃,-20℃,and-40℃,respectively.Temperature-varying characteristics have a large effect on the suspension parameters of alpine EMUs,with dynamic performance deteriorating at low temperatures,wear intensifying,and wheel surface fatigue increasing.关键词
高寒动车组/温变特性/轮轨接触/车轮磨耗/接触疲劳因子Key words
alpine EMUs/temperature-varying characteristics/wheel-rail contact/wheel wear/contact fatigue index分类
交通工程引用本文复制引用
祁亚运,李龙,石怀龙,宋烨,戴焕云..高寒动车组温变特性对运行性能的影响分析[J].西南交通大学学报,2025,60(2):336-345,10.基金项目
国家自然基金项目(U2268211,52302467,52002341) （U2268211,52302467,52002341）
四川省自然科学基金项目(2022NSFSC1887) （2022NSFSC1887）
牵引动力国家重点实验室开放课题(TPL2309) （TPL2309）
