中国铁道科学2017，Vol.38Issue(3)：63-69,7.DOI:10.3969/j.issn.1001-4632.2017.03.09
轮轨振动行为下高速轮轨滚动接触瞬态特性分析
Transient Characteristics Analysis of High-Speed Wheel-Rail Rolling Contact under Wheel-Rail Vibration
摘要
Abstract
Taking the head car of CRH2 high speed train as the research object,on the basis of the simplified model of wheel-rail rolling contact vibration,the multi-body dynamics software UM was used to establish the multi-body dynamics numerical model of high-speed train.The contact parameters of wheelrail vibration behavior were calculated and used as the inputs of finite element analysis.The finite element method was used to establish the transient finite element model of high speed wheel rail rolling contact to analyze the transient characteristics of rolling contact under wheel-rail vibration.Results show that the vertical vibration of wheel and rail is obvious,and the wheel-rail vertical force varies periodically and the period is about 0.1 s.The vibration frequency is about 10 Hz,the maximum wheel-rail vertical force is 115 751.8 N and the minimum is 688.4 N,which is 1.938 times and 0.012 times of the wheel-rail static load respectively.The vibration frequency of wheelset lateral displacement is about 1.05 Hz and the amplitude is 5.26 mm.The lateral displacement of wheelset is the maximum at the moment of 0.5 s which is 7.17 times of that at the moment of 0.2 s,but the longitudinal and transverse creep forces at the moment of 0.2 s are greater than those at the moment of 0.5 s.The mean values of wheel-rail longitudinal and transverse creep forces at different time are 13 542.11 and 1 239.07 N respectively.In a certain range,the longitudinal and transverse creep forces are positively related to the vertical force,wheelset attack angle and contact patch of wheel and rail.关键词
轮轨振动/轮轨滚动接触/高速列车/瞬态有限元分析Key words
Wheel-rail vibration/Wheel-rail rolling contact/High-speed train/Transient finite element analysis分类
交通工程引用本文复制引用
肖乾,昌超,王立乾,王磊..轮轨振动行为下高速轮轨滚动接触瞬态特性分析[J].中国铁道科学,2017,38(3):63-69,7.基金项目
国家自然科学基金资助项目(51565013) （51565013）
西南交通大学牵引动力国家重点实验室开放课题(TPL1407) （TPL1407）
