交通信息与安全2018，Vol.36Issue(2)：1-9,9.DOI:10.3963/j.issn.1674-4861.2018.02.001
轨道不平顺波长和幅值对高速动车组动力学性能的影响分析
Influences of Track Irregularity Wavelength and Amplitude on Dynamic Performance of High-speed EMU
摘要
Abstract
In order to understand track irregularity of high-speed railways,and to guaranteeitsoperation safety,dy-namic simulations of one type of high-speed electric multiple unit(EM U)are carried out.Specifically,the influences of track irregularity wavelength and amplitude on vehicle dynamic performance are analyzed to determine the ranges of irreg-ularity wavelength,which requires special attention during track maintenance.For simplification,the track irregularity is converted to vertical profile,track alignment,track cross-level,and track twist irregularities of harmonic wave with dif-ferent wavelengths and amplitudes,and simulations are carried out based on a vehicle-track coupled dynamic model.The results show that the irregularities withinshort and mid wavelength range havesignificant impacton wheel/rail dynamic in-teraction and the safety and smoothness of train operation,which is mainly caused by the irregularities within mid and long wavelength range.The vehicle dynamic force has a linear positive relationship with the irregularity amplitude,and the change of irregularity amplitude undersensitive wavelength has significant influences on system dynamic.Analysis re-sults determine the sensitive wavelength ranges of track irregularity and corresponding influence of its amplitudeof the specific type of high-speed EMU,which highlights the key points of track maintenance,andhelpful for improvingmainte-nance efficiency as well as operation quality of EMU.关键词
轨道交通/高速动车组/动力学分析/车辆-轨道耦合动力学/轨道不平顺/波长/幅值Key words
rail transportation/high-speed EM U/dynamic analysis/vehicle-track coupled dynamics/track irregu-larity/wavelength/amplitude分类
交通工程引用本文复制引用
袁玄成,王开云,閤鑫,翟婉明..轨道不平顺波长和幅值对高速动车组动力学性能的影响分析[J].交通信息与安全,2018,36(2):1-9,9.基金项目
国家重点研发计划子项目(2016YFB1200401-102C)、中国铁路总公司科技研究开发计划重大课题(2016G002-A)、四川省科技计划项目(2016GZ0333)资助 （2016YFB1200401-102C）
