摘要
首先调研了地铁线路不同轨道类型轮轨耦合振动特性,以及不同曲线半径、不同轨道类型下钢轨波磨波长的分布状态,进一步结合构架固有模态信息对车辆轨道系统模态静态匹配展开研究;然后基于刚柔耦合理论和模态综合法建立了考虑构架柔性的地铁车辆刚柔耦合动力学模型,通过扫频法对车辆轨道系统模态动态匹配展开研究;最后分析构架结构阻尼比和转向架一系悬挂垂向刚度对构架振动传递的影响。针对以上研究,提出了一套适用于地铁转向架的模态匹配方法,进一步识别了转向架构架上可能出现的共振区段以及敏感的工作模态。
Firstly,this paper investigates the wheel rail coupling vibration characteristics of different track types of subway lines and the distribution of rail wave wear wavelength with different curve radius and track types,and further studies the modal static matching of vehicle track system with the reference of the inherent modal information of the frame.Then,based on the rigid flexible coupling theory and modal synthesis method,the rigid flexible coupling dynamic model of metro vehicle considering frame flexibility is established.The modal dynamic matching of vehicle track system is studied through the frequency sweep method.Finally,the effects of the structure damping ratio of the frame and the primary suspension vertical stiffness of the bogie on frame vibration transmission are analyzed.On the basis of the above research,a set of modal matching method suitable for metro bogie is proposed to further identify the possible resonance section and sensitive working modes of the bogie frame.
作者
董晓华
吴兴文
赵明花
梁树林
李飞
DONG Xiaohua;WU Xingwen;ZHAO Minghua;LIANG Shulin;LI Fei(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China;School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;National Innovation Center of High Speed Train,Qingdao 266000,China)
出处
《机械》
2022年第7期20-28,共9页
Machinery
基金
中国国家铁路集团有限公司科技研究开发计划(P2019J002)
科技部重点研发计划(2018YFE0201401-01)
四川省应用基础研究(2020YJ0075)。
关键词
模态分析
刚柔耦合动力学模型
模态静态匹配
模态动态匹配
结构阻尼比
modal analysis
rigid flexible coupling dynamic model
modal static matching
modal dynamic matching
structural damping ratio
