Nonlinear hunting stability of high-speed railway vehicle on a curved track under steady aerodynamic load
文献类型：期刊论文
| 作者 | Wu H(吴晗)3,4; Ceng XH(曾晓辉)3,4; Lai J(赖姜)2; Yu Y(余洋)1; Zeng XH(曾晓辉) ; Lai J(赖姜)
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| 刊名 | VEHICLE SYSTEM DYNAMICS
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| 出版日期 | 2020-02-01 |
| 卷号 | 58期号:2页码:175-197 |
| 关键词 | Hunting stability aerodynamic lift crosswind load curved track critical speed |
| ISSN号 | 0042-3114 |
| DOI | 10.1080/00423114.2019.1572202 |
| 通讯作者 | Zeng, Xiao-Hui(zxh@imech.ac.cn) |
| 英文摘要 | This 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. |
| 分类号 | 二类 |
| WOS关键词 | BIFURCATION ; DYNAMICS ; WHEEL |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000505863800001 |
| 其他责任者 | Zeng, Xiao-Hui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81262]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Tianjin Univ, Sch Civil Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin, Peoples R China 2.Nucl Power Inst China, Chengdu, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China; |
| 推荐引用方式 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,Zeng XH,&Lai J.(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. |
入库方式： OAI收割
来源：力学研究所
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