车轮多边形对重载机车轮轨相互作用及接触损伤的影响分析  

Wheel-Rail Interaction and Rolling Fatigue Damage of Heavy-Haul Locomotive Subjected to Wheel Polygonal Wear

作　　者：张波 杨云帆[2] 凌亮[2] 王开云[2] ZHANG Bo;YANG Yunfan;LING Liang;WANG Kaiyun(The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive,CRRC Zhuzhou Locomotive Co.,Ltd.,Changsha 412001,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中车株洲电力机车有限公司重载快捷大功率电力机车全国重点实验室,湖南株洲412001 [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：《西南交通大学学报》2023年第6期1339-1346,共8页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金(U2268210,52072317,51825504)。

摘　　要：为了研究重载机车轮轨接触损伤问题,建立重载列车-轨道三维耦合动力学模型,研究车轮多边形与多种轨面摩擦条件下的机车轮轨系统动态相互作用行为.在此基础上,建立基于轮轨系统动力学响应的车轮踏面疲劳损伤预测模型,研究制动工况和轮轨接触表面变摩擦条件下车轮多边形磨耗对车轮表面磨损的影响.结果表明:严重的车轮多边形磨耗不仅加剧轮轨动态相互作用,也会增大轮轨接触界面磨耗损伤;在干燥接触条件下,车轮多边形会加剧车轮踏面疲劳损伤,车轮多边形导致机车第1位轮对和第4位轮对的损伤指数波动范围较正常车轮损伤指数的波动范围增大19.59%和39.43%;在低黏着接触条件下,车轮多边形会加剧车轮磨耗,车轮多边形导致轮轨蠕滑力波动增大5.85倍,使得机车第1位轮对和第4位轮对的磨耗数波动范围增大6.44倍和6.22倍.In order to study the rolling fatigue damage(RCF) of heavy-haul locomotive wheels,the threedimensional heavy-haul locomotive–track coupled dynamics model was established,and the dynamic interaction behavior of locomotive wheel–rail system under the condition of wheel polygonal wear and different rail surface frictions was studied.On this basis,a wheel tread RCF prediction model based on the dynamic responses of the wheel–rail system was established,and the effect of wheel polygonal wear on the wheel surface wear was studied under the changing wheel –rail friction conditions with the braking effort.The results suggest that the wheel polygonal wear not only intensifies wheel–rail dynamic interaction but also increases wheel–rail interface wear and damage.The wheel polygonal wear can aggravate the wheel tread RCF under the dry contact condition.The fluctuation range of the damage index of the locomotive with one and four wheelsets increases by 19.59% and39.43% compared with that of a normal wheel.Under the low-adhesion contact condition,the wheel polygonal wear can aggravate the wheel wear,and the fluctuation range of wheel–rail creep force increases 5.85 times.The fluctuation range of the wear number of the locomotive with one and four wheelsets improves 6.44 times and 6.22times,respectively.

关 键 词：重载机车 车轮疲劳损伤 车轮多边形 车辆-轨道耦合动力学 损伤指数 

分 类 号：U270.1[机械工程—车辆工程] U211.5[交通运输工程—载运工具运用工程]