西南交通大学学报2017，Vol.52Issue(1)：112-117,6.DOI:10.3969/j.issn.0258-2724.2017.01.016
轮对结构和扣件刚度对钢轨波磨的影响
Influence of Wheelset Structure and Fastener Stiffness on Rail Corrugation
摘要
Abstract
In order to study the formation mechanism and influence factors of rail corrugations on a sharp curved track of metro line,a finite element model for a wheelset-track system on a sharp curved track,which consists of a power wheelset,two rails and a series of sleepers,is established from the viewpoint of friction-induced vibration causing rail corrugation.Using this model,the stability and dynamic performance of the wheelset-track system are analyzed by the complex eigenvalue analysis and transient dynamic analysis.The simulation results show that the friction-induced vibration of the wheelset-track system is more likely to occur under the effect of the saturated creep force,which is able to cause rail corrugation.Meanwhile,the gearbox location on the leading wheelset has a little influence on the self-excited vibration of the system.The lateral stiffness of the fastener has a little influence,while the vertical stiffness has a significant influence on self-excited vibration.As the vertical stiffness of fastener increases,the unstable vibration of the wheelset-track system presents a trend of first increase and then decrease.When the vertical stiffness is about 20 MN/mm,rail corrugation is most likely to occur.关键词
钢轨波磨/自激振动/轮对结构/扣件刚度Key words
rail corrugation/friction-induced vibration/wheelset structure/fastener stiffness分类
交通工程引用本文复制引用
崔晓璐,陈光雄,杨宏光..轮对结构和扣件刚度对钢轨波磨的影响[J].西南交通大学学报,2017,52(1):112-117,6.基金项目
国家自然科学基金资助项目(51275429) （51275429）
