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 | |
2014 | |
会议日期 | 8-11 April 2014 |
会议地点 | Ajaccio, Corsica, France |
关键词 | Aerodynamic 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 |
英文摘要 | 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. |
会议录 | PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE |
语种 | 英语 |
ISBN号 | 978-1-905088-59-1 |
内容类型 | 会议论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/78001] |
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.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; 2.Beijing Micro-Vibration Control Engineering Research Center, China |
推荐引用方式 GB/T 7714 | Zeng XH,Yang GW,Liu MB. Hunting of railway vehicle under actions of steady aerodynamic loads in open air[C]. 见:. Ajaccio, Corsica, France. 8-11 April 2014. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论