摩擦调节剂抑制钢轨波磨的机理研究  

Mechanism for friction to suppress a wear-type rail corrugation

作　　者：肖祥龙[1] 陈光雄[1] 莫继良[1] 朱旻昊[1] 

机构地区：[1]西南交通大学牵引动力实验室摩擦学研究所,成都610031

出　　处：《振动与冲击》2013年第8期166-170,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助(51275429;51005191);四川省科技支撑计划资助(2010GZ0227);教育部创新团队发展计划资助(IRT1178)

摘　　要：基于轮轨之间的摩擦耦合自激振动引起钢轨波磨的观点,建立了车辆稳态通过小半径曲线时由轮对-钢轨-轨枕组成的轮轨系统有限元弹性振动摩擦自激振动有限元模型,用ABAQUS软件对该模型的运动稳定性进行了分析,重点研究了轮轨摩擦系数和蠕滑力-蠕滑率曲线负斜率对轮轨系统摩擦自激振动的影响。计算结果显示,轮轨摩擦系数对轮轨摩擦自激振动有重要影响,当控制摩擦系数μ≤0.27时可以消除钢轨磨耗型波磨,蠕滑力-蠕滑率曲线负斜率对钢轨波磨有显著影响。From the viewpoint that the coupling between friction and self-excited vibration of a wheelset-track system causes a wear-type rail corrugation, a finite element model of a wheelset-traek system when a vehicle passed steadily a curve with a smaller radius was established, it included a wheelset, two rails and a series of sleepers. The motion stability of the model was analyzed using ABAQUS software. The effects of the friction coefficient and the negative slop of a creep force-creepage curve on the friction-self-excited vibration of the wheelset-track system were studied emphatically. Results showed that the friction coefficient has a large effect on the friction-self-excited vibration of the wheelset-track system; when the friction coefficient μ≤0. 27, the wear-type rail corrugation can be eliminated; the negative slop of a creep force-creepage curve has a great effect on the wear-type rail corrugation.

关 键 词：摩擦 蠕滑力 自激振动 轮轨 钢轨波磨 

分 类 号：TH117.3[机械工程—机械设计及理论]