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IMECH-IR  > 流固耦合系统力学重点实验室(2012-)  > 期刊论文
Title:
Motion stability of high-speed maglev systems in consideration of aerodynamic effects: a study of a single magnetic suspension system
Author: Wu H(吴晗); Ceng XH(曾晓辉); Yu Y(余杨)
Source: ACTA MECHANICA SINICA
Issued Date: 2017-12-01
Volume: 33, Issue:6, Pages:1084-1094
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.

Keyword: High-speed maglev system ; Critical speed ; Aerodynamic effect ; Motion stability
Language: 英语
Indexed Type: SCI ; EI ; CSCD
Corresponding Author: Zeng, XH (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China.
Correspondent Email: zxh@imech.ac.cn
DOI: 10.1007/s10409-017-0698-z
DOC Type: Article
WOS Subject: Engineering, Mechanical ; Mechanics
WOS Subject Extended: Engineering ; Mechanics
WOS Keyword Plus: SELF-EXCITED VIBRATION ; HUNTING STABILITY ; FEEDBACK-CONTROL ; FLEXIBLE GUIDEWAYS ; DELAYED POSITION ; RAILWAY VEHICLES ; TRACK ; SUPPRESSION ; BIFURCATION ; LOADS
WOS ID: WOS:000417055100009
ISSN: 0567-7718
Funder: 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)
Rank: [Wu, Han; Zeng, Xiao-Hui] Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; [Wu, Han; Zeng, Xiao-Hui] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; [Wu, Han; Yu, Yang] Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China
Department: LMFS结构力学(LHO)
Classification: 二类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/72126
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Wu H, Zeng X H_, Yu Y. Motion stability of high-speed maglev systems in consideration of aerodynamic effect_ a study of a single magnetic suspension system. Acta Mechanica Sinica, 2017, 33(6)_ 1084-1094.pdf(1236KB)期刊论文作者接受稿开放获取View Download

Recommended Citation:
Wu H,Ceng 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,2017-12-01,33(6):1084-1094.
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文件名: Wu H, Zeng X H_, Yu Y. Motion stability of high-speed maglev systems in consideration of aerodynamic effect_ a study of a single magnetic suspension system. Acta Mechanica Sinica, 2017, 33(6)_ 1084-1094.pdf
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