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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)
Source PublicationActa Mechanica Sinica
2014-12
Volume30Issue:6Pages:889-900
ISSN0567-7718
AbstractThe 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.
KeywordHunting Stability Linear Critical Speed Nonlinear Critical Speed Aerodynamic Loads Suspension Parameters Orthogonal Experimental Design
DOI10.1007/s10409-014-0119-5
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000348990100014
WOS KeywordLATERAL STABILITY ; CURVED TRACK ; BIFURCATION ; DYNAMICS ; TRUCKS ; SIMULATION ; BEHAVIOR ; MOTIONS ; CHAOS
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding Organizationsupported 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 IDCSCD:5331828
DepartmentLMFS结构力学(LHO)
Classification二类
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49542
Collection流固耦合系统力学重点实验室
Corresponding Author曾晓辉 (Zeng XH)
Recommended Citation
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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