车轮踏面并行反求设计方法  

Parallel Inverse Design Method of Wheel Profile

作　　者：薛弼一[1] 崔大宾[2] 李立[3] 杜星[1] 温泽峰[1] 金学松[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]西南交通大学峨眉校区机械工程系,峨眉614202 [3]西南交通大学机械工程学院,成都610031

出　　处：《机械工程学报》2013年第16期8-16,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(U1134202;51275427);国家科技支撑计划(2009BAG12A01-B08-1/B03);教育部创新团队(IRT1178);国家重点实验室自主研究课题(2012TPL-T14)资助项目

摘　　要：对轮轨接触几何关系进行详细推导,找出轮轨型面、轮径差和轮轨接触点分布状态之间的关系,开发基于轮径差反求车轮踏面的并行数值计算程序。根据某线路上实测的高速列车踏面磨耗情况,分析计算车轮磨耗对踏面等效锥度及临界速度的影响,并得出临界速度随等效锥度的变化规律。对磨耗踏面的梯度进行比较分析,找出抑制踏面产生凹形磨耗的方法。根据实测踏面磨耗状态对车轮踏面的初始等效锥度进行合理调整,用反求设计方法对踏面进行设计,并对设计前后踏面的接触几何特性、轮轨接触力学特性及车辆的动力学性能进行比较分析。研究结果表明,该设计方法计算效率高,可以较好地保证其收敛性;设计踏面轮轨接触性能及动力学性能良好,可以满足车辆的高速运行需求;新设计踏面磨耗后具有较好的动力学性能,可以有效延长车轮的镟修周期。The relationship among the wheel-rail profiles,rolling circle radius differences and distribution state of the wheel-rail contact points are obtained through wheel-rail contact geometry derivation and the parallel programming is developed to reverse design the wheel profile based on the rolling circle radius difference.According to the measured wheel treads in different period in one re-profile cycle,the effects of wheel wear on equivalent conicity and critical hunting speed is researched,and the regularity between critical speed and equivalent conicity is obtained.The gradient of the worn wheel tread is analyzed,and the strategy for preventing the hollow wear of the tread is put forward.Finally the equivalent conicity is adjusted rationally based on the measured wheel tread,and wheel profile is designed using the parallel programming.The wheel-rail contact geometry characteristics,wheel-rail contact mechanical properties and the vehicle dynamic behaviors are investigated with the new designed wheel tread.The results show that the wheel profile reverse design method has high computation efficiency and good convergence.The wheel-rail contact performances and the vehicle dynamics behaviors are improved and can meet the high speed running requirement.When the wheel is worn,the vehicle has better dynamic behaviors with new designed wheel,and the wheel tread live-span will be expanded.

关 键 词：高速列车 轮轨 踏面设计 并行计算 轮径差 

分 类 号：U211[交通运输工程—道路与铁道工程]