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.
作者
戴佳宇
李霞
唐伟
王安斌
DAI Jiayu;LI Xia;TANG Wei;WANG Anbin(School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《噪声与振动控制》
CSCD
北大核心
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)。
关键词
振动与波
轨底坡
滚动接触
接触几何
动力学性能
vibration and wave
rail cant
rolling contact
contact geometry
dynamic performance
