轨顶摩擦改进剂对车辆动力学性能的影响  

Effect of Friction Modifier of Rail Top on Dynamic Performance of Vehicles

作　　者：姚雪松[1] 吴磊[2] 王衡禹[3] 温泽峰[3] 刘启跃[1] 金学松[3] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031 [2]西南交通大学峨眉校区机械工程系,四川峨眉614202 [3]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》2015年第5期58-63,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(U1361117;51174282);教育部创新团队科学基金项目(IRT1178);中国铁路总公司课题(2011G018-B);四川省应用基础研究项目(2011JY0091)

摘　　要：通过对轨顶涂覆摩擦改进剂对轮轨黏着特性影响的分析,发现摩擦改进剂不仅会改变轨面摩擦因数,并且会改变Kalker权重系数,这与通常认为的摩擦改进剂只改变摩擦因数不同。考虑摩擦改进剂对摩擦因数和Kalker权重系数的影响,研究货车车辆在轨顶涂覆摩擦改进剂的轨道上运行时的动力学性能。利用SIMPACK软件包建立货车车辆模型,包括车体、摇枕、侧架、轴箱、轮对等部件,分析车辆在轨顶涂覆摩擦改进剂的轨道上直线和曲线运行时的平稳性和安全性。计算结果表明,摩擦改进剂可以明显改善车体的横向平稳性,而对车体的垂向平稳性影响较小;摩擦改进剂会使车辆的脱轨系数和轮重减载率小幅增加,但是均小于国标规定的安全限值,不会影响行车安全。By analyzing the effect of friction modifier of rail top on the adhesion characteristics of wheel rail, it was found that the FM not only changes the coefficient of friction, but also changes the Kalker weighting factor, which is dif- ferent from the conventional belief that only coefficient of friction is changed after the application of friction modifier. The dynamic performance of freight cars running in the rail with friction modifier was studied considering the effect of friction modifier on coefficient of friction and Kalker weighting factor. A vehicle model of freight car was established with SIM- PACK software package, which included a car body, bolster, side-frame, axle boxes and wheel sets, and etc. The stabili- ty and safety of the vehicle were analyzed on the straight and curved rails with friction modifier. Calculation results show that the application of friction modifier can significantly improve the lateral stability of the car-body, but it has little effect on vertical stability. The derailment coefficient and wheel unloading rate will be increased slightly after the application of friction modifier, however, they are both within the safe range of national standard, and would not do harm to the operation safety.

关 键 词：轨道润滑 摩擦改进剂 动力学 黏着特性 

分 类 号：TB117.1[理学—数学]