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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); Zeng XH(曾晓辉); Yu Y(余杨)
Source PublicationACTA MECHANICA SINICA
2017-12-01
Volume33Issue:6Pages:1084-1094
ISSN0567-7718
Abstract

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.

KeywordHigh-speed Maglev System Critical Speed Aerodynamic Effect Motion Stability
DOI10.1007/s10409-017-0698-z
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000417055100009
WOS KeywordSelf-excited Vibration ; Hunting Stability ; Feedback-control ; Flexible Guideways ; Delayed Position ; Railway Vehicles ; Track ; Suppression ; Bifurcation ; Loads
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationNational 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 IDCSCD:6139289
DepartmentLMFS结构力学(LHO)
Classification二类
Ranking1
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72126
Collection流固耦合系统力学重点实验室
Corresponding AuthorZeng XH(曾晓辉)
Recommended Citation
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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