Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies

doi:10.1007/s10409-014-0119-5

IMECH-IR > 流固耦合系统力学重点实验室

	Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies
	Zeng XH(曾晓辉); Wu H(吴晗); Lai J(赖姜); Sheng HZ(盛宏至); 曾晓辉 (Zeng XH)
发表期刊	Acta Mechanica Sinica
	2014-12
卷号	30 期号:6 页码:889-900
ISSN	0567-7718
摘要	The influences of steady aerodynamic loads on hunting stability of high-speed railway vehicles were investigated in this study. A mechanism is suggested to explain the change of hunting behavior due to actions of aerodynamic loads: the aerodynamic loads can change the position of vehicle system (consequently the contact relations), the wheel/rail normal contact forces, the gravitational restoring forces/moments and the creep forces/moments. A mathematical model for hunting stability incorporating such influences was developed. A computer program capable of incorporating the effects of aerodynamic loads based on the model was written, and the critical speeds were calculated using this program. The dependences of linear and nonlinear critical speeds on suspension parameters considering aerodynamic loads were analyzed by using the orthogonal test method, the results were also compared with the situations without aerodynamic loads. It is shown that the most dominant factors affecting linear and nonlinear critical speeds are different whether the aerodynamic loads considered or not. The damping of yaw damper is the most dominant influencing factor for linear critical speeds, while the damping of lateral damper is most dominant for nonlinear ones. When the influences of aerodynamic loads are considered, the linear critical speeds decrease with the rise of crosswind velocity, whereas it is not the case for the nonlinear critical speeds. The variation trends of critical speeds with suspension parameters can be significantly changed by aerodynamic loads. Combined actions of aerodynamic loads and suspension parameters also affect the critical speeds. The effects of such joint action are more obvious for nonlinear critical speeds.
关键词	Hunting Stability Linear Critical Speed Nonlinear Critical Speed Aerodynamic Loads Suspension Parameters Orthogonal Experimental Design
DOI	10.1007/s10409-014-0119-5
URL	查看原文
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000348990100014
关键词[WOS]	LATERAL STABILITY ; CURVED TRACK ; BIFURCATION ; DYNAMICS ; TRUCKS ; SIMULATION ; BEHAVIOR ; MOTIONS ; CHAOS
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
项目资助者	supported by the National Basic Research Program (973 Program) of China ; The project was supported by the National Basic Research Program (973 Program) of China (2011CB711100 and 2014CB046801), the National Natural Science Foundation of China (11072246 and 51490673), and the Knowledge Innovation Program of Chinese Academy of Sciences (KJCX2-EW-L01). ; the National Natural Science Foundation of China ; the Knowledge Innovation Program of Chinese Academy of Sciences
CSCD记录号	CSCD:5331828
课题组名称	LMFS结构力学(LHO)
论文分区	二类
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录] 被引频次：7[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/49542
专题	流固耦合系统力学重点实验室
通讯作者	曾晓辉 (Zeng XH)
推荐引用方式 GB/T 7714	Zeng XH,Wu H,Lai J,et al. Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies[J]. Acta Mechanica Sinica,2014,30,6,:889-900.
APA	Zeng XH,Wu H,Lai J,Sheng HZ,&曾晓辉 .(2014).Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies.Acta Mechanica Sinica,30(6),889-900.
MLA	Zeng XH,et al."Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies".Acta Mechanica Sinica 30.6(2014):889-900.

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