中国铁道科学2018，Vol.39Issue(3)：57-62,6.DOI:10.3969/j.issn.1001-4632.2018.03.08
基于Newmark-β预测校正积分法的高速车辆垂向—纵向耦合振动研究
Study on the Longitudinal-Vertical Coupling Vibration of High-Speed Vehicle Based on Newmark-β Forecast-Correction Integral Method
摘要
Abstract
Taking the CRH2 EMU as the research object,a mathematical model with 13 degrees of freedom for the longitudinal-vertical coupling vibration of vehicle was established to effectively evaluate the influence of wheelset dynamic balance on the vertical and longitudinal vibration system of vehicle.Based on Newmark-β forecast-correction integral method,the vibration response of the system was solved by Matlab software.The calculation results agreed well with those obtained by traditional multi-body dynamic software UM.The accuracy and reliability of the mathematical model and the algorithm were verified.On this basis,the effects of wheelset dynamic balance on the vertical and longitudinal vibration responses of vehicle were analyzed,and the optimization measures were proposed.Results show that,when the speed is 60 and 300 km · h-1,the frequency of excitation force caused by the dynamic balance of wheelset is close to the natural frequency of vehicle.The corresponding vibration frequency is 6 and 31 Hz,and the vehicle running stability decreases.The use of nonlinear longitudinal stiffness traction rod can effectively reduce vehicle vibration around 6 and 31 Hz caused by the dynamic balance of wheelset,and improve ride comfort.关键词
高速车辆/牵引拉杆/轮对动平衡/转向架耦合振动/数值计算Key words
High speed vehicle/Traction rod/Wheelset dynamic balance/Coupled vibration of bogie/Numerical calculation分类
交通工程引用本文复制引用
侯茂锐,胡晓依,李海涛..基于Newmark-β预测校正积分法的高速车辆垂向—纵向耦合振动研究[J].中国铁道科学,2018,39(3):57-62,6.基金项目
中国铁路总公司科技研究开发计划(SY2016G002,2016G008-F,2017J003-B) （SY2016G002,2016G008-F,2017J003-B）
中国铁道科学研究院行业服务技术创新项目(2016YJ140) （2016YJ140）
