中南大学学报（自然科学版）2023，Vol.54Issue(12)：4956-4967,12.DOI:10.11817/j.issn.1672-7207.2023.12.031
基于非经典阻尼模态的车辆滚摆振动分析
Sway analysis of railway vehicle based on non-classical damping mode decoupling
摘要
Abstract
A rock-roll vibrational model of railway vehicle was established taking account of the lateral displacements and the roll rotations of the carbody and the bogie frame.Formula for calculating the system response was derived based on complex mode analysis,and the physical insight between the the responses of carbody and bogie frame in lateral and rotational directions,and the mode coordinates was revealed based upon phase synchronization.The results show that there are 4 vibration modes in the sway motion of the vehicle system,including the lower sway of carbody and bogie frame in phase,the upper sway of cabody and bogie frame in phase,the lower sway of carbody and bogie frame out of phase,and the upper sway of carbody and bogie frame out of phase,respectively.The damping ratio of each mode of the vehicle with outside axlebox is larger than that of the vehicle with inner axlebox.The vibration response of the rail vehicle with outside axlebox is lower than that of the rail vehicle with inner axlebox in the frequency below 10 Hz,while above 10 Hz,the two vehicles have similar vibration levels.The vibration level of the carbody is higher than that of the bogie frame below 2 Hz,and the opposite situation occurs if the frequency is above 2 Hz for both types of railway vehicle.Adopting reasonable flexibility in the secondary lateral stiffness and the optimization of the secondary lateral damper are the most effective measures to mitigate the carbody low frequency vibration.关键词
铁道车辆/振动/滚摆/复模态分析/悬挂系统参数Key words
railway vehicle/vibration/sway/complex mode analysis/suspension system parameters分类
交通工程引用本文复制引用
关庆华,李昌隆,张斌,李伟,温泽峰,梁树林..基于非经典阻尼模态的车辆滚摆振动分析[J].中南大学学报（自然科学版）,2023,54(12):4956-4967,12.基金项目
国家自然科学基金联合基金资助项目(U21A20168) （U21A20168）
四川省科技计划项目(2023NSFSC0399) （2023NSFSC0399）
广西科技计划项目(桂科AD20297125) （桂科AD20297125）
牵引动力国家重点实验室自主研究课题(2020TPL-T02)(Project(U21A20168)supported by the Joint Funds of National Natural Science Foundation of China （2020TPL-T02）
Project(2023NSFSC0399)supported by the Sichuan Science and Technology Program （2023NSFSC0399）
Project(AD20297125)supported by the Guangxi Science and Technology Program （AD20297125）
Project(2020TPL-T02)supported by the Scientific Research Foundation of the State Key Laboratory of Traction Power) （2020TPL-T02）
