期刊文献+

构架结构振动与动态应力仿真研究 预览 被引量:25

SIMULATION OF RAILWAY BOGIE DYNAMIC STRESS AND ELASTIC VIBRATION
在线阅读 下载PDF
收藏 分享 导出
摘要 首先利用有限单元法,建立了详细的构架有限元模型并求解其各阶振动模态,在此基础上建立了完整的刚-弹性体车辆系统动力学模型;通过动力学模拟计算得到了构架在车辆曲线通过和随机激扰下的结构振动响应;最后,将构架的动力学计算结果返回到有限元中,得到了构架的动态应力时间历程与分布特性.该种研究方式不仅完成了多体系统动力学研究中刚体与弹性体的有机结合,而且为转向架在结构设计阶段通过模拟计算就可获得车辆运行过程中构架的动态应力分布,为评估其疲劳寿命奠定了基础.该仿真技术同样实用于其他相关研究领域,如航空航天、工程机械和公路车辆等. Firstly, the FEM model of the bogie of the car is established and the modes are calculated in the FEM software. Secondly, the multi-body vehicle dynamic system model is set up in which the carbody, axleboxes and the wheelsets are taken as rigid body and the bogie of the truck is regarded as elastic one. With time integration, the structural vibration of the railway bogie and dynamic responses of the other parts of the car are achieved while the vehicle negotiates a curve and runs on straight track with the stochastic excitation. Finally, the dynamic stress distribution characteristics of the bogies in time domain are obtained after the dynamic responses of the bogies are input to the FEM. In this process, not only the more accu- rate dynamic responses of the bogies can be acquired, but also the dynamic stress distribution and the structural vibration of the railway bogie can be achieved. For one thing, this research technology combines the elastic body with the rigid one as a tightly system. For another, it is very useful to obtain the dynamic stress and evaluate the service life of bogie in its structural design stage. This simulation technology can also be fully used in other mechanical research fields such as road vehicles, military tanks and aeronautic machines.
作者 任尊松 孙守光 李强 毛娟 Ren Zunsong Sun Shouguang Li Qiang Mao Juan (College of Mechanical & Electric Engineering, Beijing Jiaotong University, Beijing 100044)
出处 《机械工程学报》 EI CAS CSCD 北大核心 2004年第8期 187-192,共6页 Journal of Mechanical Engineering
关键词 铁道车辆 构架 动态应力 结构振动 疲劳寿命 仿真 有限元 Bogie Dynamic stress Structural vibration Service life Simulation
  • 相关文献

参考文献5

  • 1[1]翟婉明. 车辆-轨道耦合动力学. 北京:中国铁道出版社, 2002 被引量:2
  • 2程海涛,王成国.考虑车体柔性的货车动力学仿真[J].铁道学报,2000,22(6):40-45. 被引量:24
  • 3[3]Claus H, Schiehlen W. Modeling and simulation of railway bogie structural vibrations. Vehicle System Dynamics Supplement 1998, 28:538~552 被引量:1
  • 4[4]Guyan R J. Reduction of stiffness and mass matrices. AIAA Journal, 1965, 3(2):56~75 被引量:1
  • 5陆佑方编著..柔性多体系统动力学[M].北京:高等教育出版社,1996:579.

二级参考文献2

  • 1陆佑方,柔性多体系统动力学,1996年 被引量:1
  • 2陈滨,柔性多体系统 (FMS)动力学研究的若干问题 ,一般力学 (动力学、振动与控制 )最新进,1994年 被引量:1

共引文献24

同被引文献746

引证文献25

二级引证文献123

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈