Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads

doi:10.1142/S0219455418500931

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads
	Zeng XH(曾晓辉); Lai J(赖姜); Wu H(吴晗)
刊名	INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
	2018-07-01
卷号	18 期号:7 页码:1850093
关键词	Stability self-excited vibration high-speed railway steady aerodynamic load hunting multibody dynamics
ISSN号	0219-4554
DOI	10.1142/S0219455418500931
英文摘要	With the rising speed of high-speed trains, the aerodynamic loads become more significant and their influences on the hunting stability of railway vehicles deserve to be considered. Such an effect cannot be properly considered by the conventional model of hunting stability analysis. To this end, the linear hunting stability of high-speed railway vehicles running on tangent tracks is studied. A model considering the steady aerodynamic loads due to the joint action of the airflow facing the moving train and the crosswind, is proposed for the hunting stability analysis of a railway vehicle with 17 degrees of freedom (DOF). The key factors considered include: variations of the wheel-rail normal forces, creep coefficients, gravitational stiffness and angular stiffness due to the actions of the aerodynamic load, which affects the characteristics of hunting stability. Using the computer program developed, numerical calculations were carried out for studying the behavior of the linear hunting stability of vehicles under steady aerodynamic loads. The results show that the aerodynamic loads have an obvious effect on the linear critical speeds and instability modes. The linear critical speed decreases monotonously as the crosswind velocity increases, and the influences of pitch moment and lift force on the linear critical speed are larger than the other components of the aerodynamic loads.
分类号	二类
URL标识	查看原文
WOS关键词	CROSSWIND ACTION ; WHEEL PROFILE ; CURVED TRACKS ; DYNAMICS ; RELIABILITY ; BIFURCATION ; SYSTEMS ; TRUCKS ; MODEL
WOS研究方向	Engineering, Civil ; Engineering, Mechanical ; Mechanics
语种	英语
WOS记录号	WOS:000439097200005
资助机构	Chinese Academy of Sciences [XDB22020101, XXH13506-204] ; National Key Research and Development Program of China [2016YFB1200602-09] ; National Basic Research Program (973 Program) of China [2014CB046801] ; National Natural Science Foundation of China [11672306, 51490673]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77895]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Nucl Power Inst China, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zeng XH,Lai J,Wu H. Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads[J]. INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS,2018,18(7):1850093.
APA	Zeng XH,赖姜,&吴晗.(2018).Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads.INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS,18(7),1850093.
MLA	Zeng XH,et al."Hunting Stability of High-Speed Railway Vehicles Under Steady Aerodynamic Loads".INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS 18.7(2018):1850093.