IMECH-IR  > 流固耦合系统力学重点实验室
Nonlinear hunting stability of high-speed railway vehicle on a curved track under steady aerodynamic load
Wu H(吴晗)1,2; Ceng XH(曾晓辉)1,2; Lai J(赖姜)3; Yu Y(余洋)4
Corresponding AuthorZeng, Xiao-Hui(zxh@imech.ac.cn)
Source PublicationVEHICLE SYSTEM DYNAMICS
2020-02-01
Volume58Issue:2Pages:175-197
ISSN0042-3114
AbstractThis paper investigates the nonlinear hunting stability of a high-speed vehicle on a curved track under steady aerodynamic load. We first established a nonlinear dynamic model of high-speed vehicle on a curved track while considering the effect of aerodynamic load. Then, we wrote a numerical simulation programme and verified the validity. The following two types of aerodynamic conditions were concerned in this study: considering only the aerodynamic lift and considering the crosswind loads. The influence of aerodynamic load on the creep force, the restoring force and moment generated by gravity, and the equilibrium position of the vehicle on the curved track can all change the hunting stability. We calculated bifurcation diagrams, limit cycle motions, nonlinear critical speeds, and frequency spectrum considering those two types of aerodynamic conditions, then compared with those without considering the aerodynamic effects. The results show that multiple frequencies including double frequency, triple frequency, quadruple frequency, and high frequencies will appear in addition to the fundamental frequency when hunting motion occurs. The higher frequencies which are even times of fundamental frequency are caused by the deviation of equilibrium position from track centre, while the deviation of equilibrium position is generated by curve track or crosswind load. Additionally, a positive aerodynamic lift and a crosswind load in the centrifugal direction will decrease the vehicle's motion stability, while a negative aerodynamic lift and a crosswind load in the centripetal direction can improve the stability.
KeywordHunting stability aerodynamic lift crosswind load curved track critical speed
DOI10.1080/00423114.2019.1572202
Indexed BySCI ; EI
Language英语
WOS IDWOS:000505863800001
WOS KeywordBIFURCATION ; DYNAMICS ; WHEEL
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
Classification二类
Ranking1
ContributorZeng, Xiao-Hui
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81263
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.Nucl Power Inst China, Chengdu, Peoples R China;
4.Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin, Peoples R China
Recommended Citation
GB/T 7714
Wu H,Ceng XH,Lai J,et al. Nonlinear hunting stability of high-speed railway vehicle on a curved track under steady aerodynamic load[J]. VEHICLE SYSTEM DYNAMICS,2020,58(2):175-197.
APA 吴晗,曾晓辉,赖姜,&余洋.(2020).Nonlinear hunting stability of high-speed railway vehicle on a curved track under steady aerodynamic load.VEHICLE SYSTEM DYNAMICS,58(2),175-197.
MLA 吴晗,et al."Nonlinear hunting stability of high-speed railway vehicle on a curved track under steady aerodynamic load".VEHICLE SYSTEM DYNAMICS 58.2(2020):175-197.
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