IMECH-IR  > 流固耦合系统力学重点实验室
Hunting of railway vehicle under actions of steady aerodynamic loads in open air
Zeng XH(曾晓辉)1,2; Yang GW(杨国伟)1; Liu MB(刘谋斌)1
Source PublicationPROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
2014
Conference NameTHE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Conference Date8-11 April 2014
Conference PlaceAjaccio, Corsica, France
Abstract

With the continually and prominently increasing running speed of trains, the importance of aerodynamic loads becomes more and more outstanding. Therefore the hunting behaviour of high-speed railway vehicles may be different from its low-speed counterpart. The hunting stability of a high-speed railway vehicle running on straight track in open air is studied in this paper, considering actions of steady aerodynamic loads due to the airflow in opposite advancing direction of train. The effects of variations of wheel-track normal forces, creep coefficients, gravitational stiffness and angular stiffness caused by aerodynamic loads are taken into account. A mathematical model for hunting stability analysis of a vehicle with 17 degrees of freedom is presented, in which the effects of aerodynamic loads are incorporated. A computer program based on the presented model is written, by which numerical calculations are carried out. Variation relationships between critical hunting speed and primary/secondary suspension parameters are obtained in the presence of steady aerodynamic loads. It is shown that aerodynamic loads do affect the critical hunting speed. In addition, their interactions with several secondary suspension parameters also affect the critical speed. © Civil-Comp Press, 2014.

KeywordAerodynamic Loads Aerodynamics Automobile Suspensions Degrees Of Freedom (Mechanics) Locomotives Magnetic Levitation Vehicles Railroad Plant And Structures Railroad Transportation Railroads Speed Stiffness Critical Speed High Speed Railways Hunting Linear Stability Straight Track
ISBN978-1-905088-59-1
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78001
Collection流固耦合系统力学重点实验室
Affiliation1.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China;
2.Beijing Micro-Vibration Control Engineering Research Center, China
Recommended Citation
GB/T 7714
Zeng XH,Yang GW,Liu MB. Hunting of railway vehicle under actions of steady aerodynamic loads in open air[C],2014.
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