一系悬挂与扣件参数对钢轨波磨的影响分析

 刘春阳,赵晓男,陈光雄,王科,崔晓璐

(西南交通大学 机械工程学院,四川 成都 610031)
摘要:基于摩擦自激振动可能导致钢轨波磨的观点,建立了更为完善的小半径曲线上轮轨系统摩擦自激振动模型,应用复特征值分析方法研究了轮轨系统的不稳定振动发生趋势,讨论了一系悬挂与轨道扣件刚度和阻尼参数对轮轨不稳定振动发生趋势的影响。计算结果表明:在饱和蠕滑力作用下,轮轨系统存在较强的不稳定振动发生趋势,即产生钢轨波磨的趋势;转向架一系悬挂刚度和阻尼参数对轮轨系统的自激振动影响较小;相对于一系悬挂,着重改善整体轨道上扣件的刚度和阻尼参数更有利于抑制钢轨波磨,且其中高轨上的扣件参数对钢轨波磨的影响起主要作用。
关键词:钢轨波磨;自激振动;一系悬挂参数;扣件刚度;扣件阻尼
中图分类号:TH117;U211 文献标志码:A doi:10.3969/j.issn.1006-0316.2018.10.003
文章编号:1006-0316 (2018) 10-0011-06
Influence of Primary Suspension and Rail Fastener Parameters on Rail Corrugation
LIU Chunyang,ZHAO Xiaonan,CHEN Guangxiong,WANG Ke,CUI Xiaolu
( School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China )
Abstract:The friction-induced self-excited vibration may lead to rail corrugation. In order to understand its influence, an improved friction-induced self-excited vibration model for wheel-rail system on a sharp curved track of a metro line has been adopted to study the trend of the unstable vibration of the wheel-rail system with complex eigenvalue analysis method, on the one hand, and to discuss the influence of stiffness and damping of the primary suspension and fastener on the occurrence propensity of the friction-induced self-excited vibration, on the other hand. The simulation results show that the unstable vibration of wheel-rail system is more easily to occur under the effect of the saturated creep force, which leads to rail corrugation. The damping and stiffness parameters have a little influence on self-excited vibration of wheel-rail system. Improving the stiffness and damping parameters of the integral track fastener is more conducive to the suppression of rail corrugation, and the fastener parameters of the high rail have a major influence on rail corrugation.
Key words:rail corrugation;self-excited vibration;parameters of primary suspension mechain;fastener stiffness;fastener damping
———————————————
收稿日期:2018-01-09
基金项目:国家自然科学资金项目(51775461)
作者简介:刘春阳(1991-),男,吉林榆树人,硕士研究生,主要研究方向为轮轨振动振动与噪声。
 

 

设为首页  |  加入收藏    |   免责条款
《机械》杂志版权所有     Copyright©2008-2012 Jixiezazhi.com All Rights Reserved 

  电话:028-85925070    传真:028-85925073    E-mail:jixie@vip.163.com

地址:四川省成都锦江工业开发区墨香路48号   邮编:610063

Powered by PageAdmin CMS