IMECH-IR  > 流固耦合系统力学重点实验室
Dynamic stability of an electromagnetic suspension maglev vehicle under steady aerodynamic load
Wu H(吴晗)1,2; Zeng XH(曾晓辉)1,2; Gao, Ding-Gang3; Lai, Jiang4
Source PublicationAPPLIED MATHEMATICAL MODELLING
2021-09-01
Volume97Pages:483-500
ISSN0307-904X
Abstract

In this study, the suspension stability of a maglev vehicle is investigated under steady aerodynamic load. The dynamics of the maglev vehicle in the vertical direction are modelled by considering aerodynamic lift and pitching moment, and this model is adopted to investigate how the aerodynamic load influences the suspension stability by analysing the critical speed by means of eigenvalue analysis and direct integration. Doing so reveals three modes of suspension failure: (i) an upward aerodynamic load or pitching moment can give rise to a dynamic instability, (ii) a downward aerodynamic load can give rise to a static instability and (iii) the electromagnet becomes locked in the guide-way because the vertical aerodynamic force borne by the electromagnet exceeds the vehicle weight borne by it, and the electromagnetic force cannot adjust the suspension gap. In essence, failure modes (i) and (ii) correspond to motion stability when the maglev vehicle system is perturbed by a small amount, whereas failure mode (iii) is similar to the electromagnet holding the track in the event of control failure, albeit by a different mechanism. Each suspension failure mode has its own critical speed, and how that speed depends on the aerodynamic coefficients and feedback control gains is determined.& nbsp; (c) 2021 Elsevier Inc. All rights reserved.

KeywordEMS maglev vehicle Dynamic stability Aerodynamic load Critical speed
DOI10.1016/j.apm.2021.04.008
Indexed BySCI ; EI
Language英语
WOS IDWOS:000661930800002
WOS KeywordTRAIN
WOS Research AreaEngineering ; Mathematics ; Mechanics
WOS SubjectEngineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics
Funding ProjectNational Key R&D Program of China[2016YFB1200602] ; National Natural Science Foundation of China[51805522] ; National Natural Science Foundation of China[11672306] ; National Natural Science Foundation of China[51490673] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020100]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
Classification一类
Ranking1
ContributorZeng, Xiao-Hui
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/86944
Collection流固耦合系统力学重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China;
3.Tongji Univ, Maglev Transportat Engn R&D Ctr, Shanghai, Peoples R China;
4.Nucl Power Inst China, Chengdu, Peoples R China
Recommended Citation
GB/T 7714
Wu H,Zeng XH,Gao, Ding-Gang,et al. Dynamic stability of an electromagnetic suspension maglev vehicle under steady aerodynamic load[J]. APPLIED MATHEMATICAL MODELLING,2021,97:483-500.
APA Wu H,Zeng XH,Gao, Ding-Gang,&Lai, Jiang.(2021).Dynamic stability of an electromagnetic suspension maglev vehicle under steady aerodynamic load.APPLIED MATHEMATICAL MODELLING,97,483-500.
MLA Wu H,et al."Dynamic stability of an electromagnetic suspension maglev vehicle under steady aerodynamic load".APPLIED MATHEMATICAL MODELLING 97(2021):483-500.
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