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Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system
Wu H(吴晗); Ceng XH(曾晓辉); Yu Y(余杨); Zeng, XH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
2017-12-01
发表期刊ACTA MECHANICA SINICA
卷号33期号:6页码:1084-1094
ISSN0567-7718
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
DOI10.1007/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)
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 (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Wu H,Ceng XH,Yu Y,et al. 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 吴晗,曾晓辉,余杨,&Zeng, XH .(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 吴晗,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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