IMECH-IR  > 流固耦合系统力学重点实验室
Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads
Zeng XH(曾晓辉); Wu H(吴晗); Lai J; Sheng HZ; Zeng, XH (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Source PublicationJOURNAL OF VIBRATION AND CONTROL
2016
Volume22Issue:20Pages:4159-4175
ISSN1077-5463
Abstract

Aerodynamic loads may have effects on the hunting stability, and the factor of curved track makes it more complicated. Therefore, considering the steady aerodynamic loads generated by crosswind and airflow in the opposite advancing direction of train, the hunting stability of high-speed railway vehicle on a curved track is studied in this paper. The changes of gravitational restoring force and creep coefficients which are caused by aerodynamic loads are considered, and the change of equilibrium position due to aerodynamic loads, centrifugal force and the factor of curved track is also in consideration. A mathematical model of a high-speed railway vehicle during curve negotiation with aerodynamic loads is set up. A program based on the model is written and verified. Using this program, the linear critical speed considering the effects of aerodynamic loads is determined by the eigenvalue analysis. This paper investigates the critical speeds in three aerodynamic conditions. Considering the aerodynamic loads, the dependence of critical speed on curve radius and super-elevation is analyzed, and the impact of aerodynamic loads on instability mode is analyzed as well. In addition, this paper obtains the dominant factors affecting critical speed and the variation tendency of critical speed with primary longitudinal stiffness by orthogonal experiments. The results show that the critical speed decreases or increases while the wind is blowing to outer rail or inner rail respectively. The aerodynamic loads produce obvious effects on the instability mode. The variation tendency of critical speed dependence on curve radius in the conditions with aerodynamic loads keeps consistent with the case without aerodynamic loads. It is seen from the orthogonal experiments that, aerodynamic loads and curve radius are the dominant factors affecting linear critical speed of vehicle on a curved track, and the linear critical speed decreases with the increasing of primary longitudinal stiffness.

KeywordHunting Stability Aerodynamic Loads Curved Track Linear Critical Speed Instability Mode Orthogonal Experiments
DOI10.1177/1077546315571986
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000386997900005
WOS KeywordHunting stability ; aerodynamic loads ; curved track ; linear critical speed ; instability mode ; orthogonal experiments
WOS Research AreaAcoustics ; Engineering ; Mechanics
WOS SubjectAcoustics ; Engineering, Mechanical ; Mechanics
Funding OrganizationThis work was supported by the National Basic Research Program (973 Program) of China (2011CB711100, 2014CB046801), the National Natural Science Foundation of China (11072246, 51490673) and the Knowledge Innovation Program of Chinese Academy of Sciences (KJCX2-EW-L01).
DepartmentLMFS结构力学(LHO)
Classification二类
RankingTrue
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59690
Collection流固耦合系统力学重点实验室
Corresponding AuthorZeng, XH (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zeng XH,Wu H,Lai J,et al. Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads[J]. JOURNAL OF VIBRATION AND CONTROL,2016,22(20):4159-4175.
APA Zeng XH,Wu H,Lai J,Sheng HZ,&Zeng, XH .(2016).Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads.JOURNAL OF VIBRATION AND CONTROL,22(20),4159-4175.
MLA Zeng XH,et al."Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads".JOURNAL OF VIBRATION AND CONTROL 22.20(2016):4159-4175.
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