期刊
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
卷 56, 期 7, 页码 1685-1696出版社
SCIENCE PRESS
DOI: 10.1007/s11431-013-5254-x
关键词
high speed vehicle; bifurcation; critical speed; limit cycle; normal form
资金
- National Basic Research Program of China (973 Program) [2011CB711106]
- National Key Technology R&D Program of China [2009BAG12A01]
- Southwest Jiaotong University 1st Outstanding Innovative Talents Fund of Southwest Jiaotong University
- Doctoral Student Innovation Fund of Southwest Jiaotong University
The China high speed railway vehicles of type CRH2 and type CRH3, modeled on Japanese high speed Electric Multiple Units (EMU) E2 series and Euro high speed EMU ICE3 series possess different stability behaviors due to the different matching relations between bogie parameters and wheel profiles. It is known from the field tests and roller rig tests that, the former has a higher critical speed while large limit cycle oscillation appears if instability occurs, and the latter has lower critical speed while small limit cycle appears if instability occurs. The dynamic model of the vehicle system including a semi-carbody and a bogie is established in this paper. The bifurcation diagrams of the two types of high speed vehicles are extensively studied. By using the method of normal form of Hopf bifurcation, it is found that the subcritical and supercritical bifurcations exist in the two types of vehicle systems. The influence of parameter variation on the exported function Rec (1)(0) in Hopf normal form is studied and numerical shooting method is also used for mutual verification. Furthermore, the bifurcation situation, subcritical or supercritical, is also discussed. The study shows that the sign of Re(lambda) determinates the stability of linear system, and the sign of Rec (1)(0) determines the property of Hopf bifurcation with Rec (1)(0)> 0 for supercritical and Rec (1)(0)< 0 for subcritical.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据