柔性轮对的轮轨静态接触和车辆动态性能研究Research on Wheel-rail Contact Geometry Relation and Vehicle Dynamic Behavior of Flexible Wheelset
石俊杰;崔涛;高峰;王铁成;
摘要(Abstract)：
分别研究了考虑轮对柔性时对轮轨静态接触几何关系和车辆动态性能的影响。首先在假设车轮不变形的前提下,将车轴简化为欧拉-伯努利梁模型,并以LM磨耗形踏面和标准60钢轨为研究对象,求解车轴运动微分方程以获得车轴的变形信息,再基于传统迹线法自编程序进行几何计算,求解变形后的轮轨接触几何参数,并与刚性轮对进行对比。结果表明,在横移量较小的情况下,柔性轮对与刚性轮对接触几何参数差别不大,当横移量较大时,两者有明显差异。其次,在车辆-轨道系统动力学模型中,利用模态叠加法将轮对考虑为柔性,并利用自编动力学积分程序计算常规工况和初始不称重特殊工况,分析其对轮轨力和一系悬挂力影响。结果表明常规工况下考虑轮对柔性的影响较小,而在特殊工况下,由于激励覆盖频率较高,柔性轮对的固有模态容易被激发,对轮轨力和一系悬挂力造成明显影响。
关键词(KeyWords)： 柔性轮对;轮轨接触关系;模态叠加法;车辆动态性能
基金项目(Foundation): 国家重点研发计划资助项目（2017YFB1201304)
作者(Authors): 石俊杰;崔涛;高峰;王铁成;
参考文献(References)：
- [1] Chaar N,Berg M.Vehicle-track Dynamic Simulations of a Locomotive Considering Wheelset Structural Flexibility and Comparison with Measurements[J].Journal of Rail and Rapid Transit,2005,219(4):225-238.
- [2] Baeza L,Fayos J,Roda A,Insa R.High Frequency Railway Vehicle-track Dynamics Through Flexible Rotating Wheelsets[J].Vehicle System Dynamics,2008,46(7):647-662.
- [3] Vila Paloma,Fayos Juan,Baeza Luis.Simulation of the Evolution of Rail Corrugation Using a Rotating Wheelset Model[J].Vehicle System Dynamics,2011,49(11):1749-1769.
- [4] Baeza Luis,Vila Paloma,Xie Gang,Iwnicki,Simon D.Prediction of Rail Corrugation Using a Rotating Wheelset Coupled with a Flexible Track Model and a Non-Hertzian/Non-steady Contact Model[J].Journal of Sound and Vibration,2011,330(18-19):4493-4507.
- [5] Fermer M.Flexible Wheels for Railway Freight Cars Considering Thermal and Mechanical Aspects of Block Braking[J].National Conference Publication,1992,92(10):277-280.
- [6]高浩，戴焕云，倪平涛．考虑轮对弹性的轮轨接触点算法[J]．铁道学报，2012,34(5):26-31.
- [7]张宝安，陆正刚，王恒亮．柔性轮对的轮轨接触参数分析[J]．同济大学学报（自然科学版），2013,41(4):577-582.
- [8]王开文．车轮接触点迹线及轮轨接触几何参数的计算[J]．西南交通大学学报，1984(1):89-99.
- [9]陈新华，黄志辉，卜继玲．基于ANSYS与SIMPACK联合仿真的柔性轮对动力学仿真分析[J]．机车电传动，2014(2):41-45.
- [10]宋志坤，侯银庆，胡晓依，等．柔性轮轨下轮轨波磨综合作用的振动特性研究[J]．铁道学报，2018,40(11):33-40.
- [11] Shuoqiao Zhong,Jiayang Xiong,Xinbiao Xiao,Zefeng Wen,Xuesong Jin.Effect of Thefirst Two Wheelset Bending Modes on Wheel-rail Contact Behavior,Journal of Zhejiang University-SCIENCE A.2014,15(12):984-1001.