轨底坡对轮轨接触行为及动力学性能的影响  

Influence of Rail Cant on Wheel-rail Contact Behavior and Dynamic Performance

作　　者：戴佳宇 李霞 唐伟 王安斌[1] DAI Jiayu;LI Xia;TANG Wei;WANG Anbin(School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620

出　　处：《噪声与振动控制》2022年第6期161-167,共7页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(52002343)。

摘　　要：为探讨轨底坡对轮轨接触行为及动力学性能的影响,利用多体动力学软件SIMPACK,分析地铁B型车LM和S1002型踏面与60 kg/m钢轨在不同轨底坡下的轮轨接触点分布情况、滚动圆半径差、最大接触压力、临界速度以及车辆运行安全性和平稳性指标等,从接触几何和动力学性能两方面提出LM和S1002型面的最佳轨底坡组合。计算结果表明,轨底坡对轮轨接触行为及动力学性能均有较大影响。对于LM型面在直线段采用1/20轨底坡可减小最大接触压力且不易发生蛇行失稳,对于S1002型面在直线段采用1/40轨底坡可获得良好的接触点分布及较大的接触斑面积,对于LM和S1002型面在曲线段均宜采用1/30轨底坡以获得较好的车辆运行平稳性。The influence of rail cant on wheel-rail contact behavior and dynamic performance was investigated.B-type subway vehicle dynamic model was established by the multibody dynamic analysis software SIMPACK,and the contact behavior between LM and S1002 wheel profiles and 60 kg/m rail under different rail cant conditions was analyzed.The optimal matching of rail cant for LM and S1002 profile was proposed based on a series of simulations.Key parameters such as the distribution of wheel-rail contact points,rolling radius difference,maximum contact pressure,rolling angle,critical speed et al were investigated.The calculation results show that the rail cant has a great influence on the wheel-rail contact behavior and dynamic performance.For tangent tracks and LM profile,using 1/20 rail cant can reduce the maximum contact pressure and improve snaking stability.For tangent tracks and S1002 profile,using 1/40 rail cant can obtain better distribution of wheel-rail contact points and larger contact spot area.For curved tracks and both S1002 profile and LM profile,using 1/30 rail cant can obtain better operation stability.

关 键 词：振动与波 轨底坡 滚动接触 接触几何 动力学性能 

分 类 号：U211.5[交通运输工程—道路与铁道工程]