Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system | |
Wu H(吴晗); Zeng XH(曾晓辉); Yu Y(余杨) | |
发表期刊 | ACTA MECHANICA SINICA |
2017-12-01 | |
卷号 | 33期号:6页码:1084-1094 |
ISSN | 0567-7718 |
摘要 | In this study, the intrinsic mechanism of aerodynamic effects on the motion stability of a high-speed maglev system was investigated. The concept of a critical speed for maglev vehicles considering the aerodynamic effect is proposed. The study was carried out based on a single magnetic suspension system, which is convenient for proposing relevant concepts and obtaining explicit expressions. This study shows that the motion stability of the suspension system is closely related to the vehicle speed when aerodynamic effects are considered. With increases of the vehicle speed, the stability behavior of the system changes. At a certain vehicle speed, the stability of the system reaches a critical state, followed by instability. The speed corresponding to the critical state is the critical speed. Analysis reveals that when the system reaches the critical state, it takes two forms, with two critical speeds, and thus two expressions for the critical speed are obtained. The conditions of the existence of the critical speed were determined, and the effects of the control parameters and the lift coefficient on the critical speed were analyzed by numerical analysis. The results show that the first critical speed appears when the aerodynamic force is upward, and the second critical speed appears when the aerodynamic force is downward. Moreover, both critical speeds decrease with the increase of the lift coefficient. |
关键词 | High-speed Maglev System Critical Speed Aerodynamic Effect Motion Stability |
DOI | 10.1007/s10409-017-0698-z |
收录类别 | SCI ; EI ; CSCD |
语种 | 英语 |
WOS记录号 | WOS:000417055100009 |
关键词[WOS] | Self-excited Vibration ; Hunting Stability ; Feedback-control ; Flexible Guideways ; Delayed Position ; Railway Vehicles ; Track ; Suppression ; Bifurcation ; Loads |
WOS研究方向 | Engineering ; Mechanics |
WOS类目 | Engineering, Mechanical ; Mechanics |
项目资助者 | National Key Research and Development Program of China [2016YFB1200602] ; National Natural Science Foundation of China [11672306, 51490673] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22020101] ; National Basic Research Program (973 Program) of China [2014CB046801] ; State Key Laboratory of Hydraulic Engineering Simulation and Safety (Tianjin University) |
CSCD记录号 | CSCD:6139289 |
课题组名称 | LMFS结构力学(LHO) |
论文分区 | 二类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/72126 |
专题 | 流固耦合系统力学重点实验室 |
通讯作者 | Zeng XH(曾晓辉) |
推荐引用方式 GB/T 7714 | Wu H,Zeng XH,Yu Y. Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system[J]. ACTA MECHANICA SINICA,2017,33,6,:1084-1094. |
APA | Wu H,Zeng XH,&Yu Y.(2017).Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system.ACTA MECHANICA SINICA,33(6),1084-1094. |
MLA | Wu H,et al."Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system".ACTA MECHANICA SINICA 33.6(2017):1084-1094. |
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