Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads | |
Zeng XH(曾晓辉); Wu H(吴晗); Lai J; Sheng HZ; Zeng, XH (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. | |
发表期刊 | JOURNAL OF VIBRATION AND CONTROL |
2016 | |
卷号 | 22期号:20页码:4159-4175 |
ISSN | 1077-5463 |
摘要 | Aerodynamic loads may have effects on the hunting stability, and the factor of curved track makes it more complicated. Therefore, considering the steady aerodynamic loads generated by crosswind and airflow in the opposite advancing direction of train, the hunting stability of high-speed railway vehicle on a curved track is studied in this paper. The changes of gravitational restoring force and creep coefficients which are caused by aerodynamic loads are considered, and the change of equilibrium position due to aerodynamic loads, centrifugal force and the factor of curved track is also in consideration. A mathematical model of a high-speed railway vehicle during curve negotiation with aerodynamic loads is set up. A program based on the model is written and verified. Using this program, the linear critical speed considering the effects of aerodynamic loads is determined by the eigenvalue analysis. This paper investigates the critical speeds in three aerodynamic conditions. Considering the aerodynamic loads, the dependence of critical speed on curve radius and super-elevation is analyzed, and the impact of aerodynamic loads on instability mode is analyzed as well. In addition, this paper obtains the dominant factors affecting critical speed and the variation tendency of critical speed with primary longitudinal stiffness by orthogonal experiments. The results show that the critical speed decreases or increases while the wind is blowing to outer rail or inner rail respectively. The aerodynamic loads produce obvious effects on the instability mode. The variation tendency of critical speed dependence on curve radius in the conditions with aerodynamic loads keeps consistent with the case without aerodynamic loads. It is seen from the orthogonal experiments that, aerodynamic loads and curve radius are the dominant factors affecting linear critical speed of vehicle on a curved track, and the linear critical speed decreases with the increasing of primary longitudinal stiffness. |
关键词 | Hunting Stability Aerodynamic Loads Curved Track Linear Critical Speed Instability Mode Orthogonal Experiments |
DOI | 10.1177/1077546315571986 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000386997900005 |
关键词[WOS] | Hunting stability ; aerodynamic loads ; curved track ; linear critical speed ; instability mode ; orthogonal experiments |
WOS研究方向 | Acoustics ; Engineering ; Mechanics |
WOS类目 | Acoustics ; Engineering, Mechanical ; Mechanics |
项目资助者 | This work was supported by the National Basic Research Program (973 Program) of China (2011CB711100, 2014CB046801), the National Natural Science Foundation of China (11072246, 51490673) and the Knowledge Innovation Program of Chinese Academy of Sciences (KJCX2-EW-L01). |
课题组名称 | LMFS结构力学(LHO) |
论文分区 | 二类 |
力学所作者排名 | True |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/59690 |
专题 | 流固耦合系统力学重点实验室 |
通讯作者 | Zeng, XH (reprint author), Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Zeng XH,Wu H,Lai J,et al. Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads[J]. JOURNAL OF VIBRATION AND CONTROL,2016,22,20,:4159-4175. |
APA | Zeng XH,Wu H,Lai J,Sheng HZ,&Zeng, XH .(2016).Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads.JOURNAL OF VIBRATION AND CONTROL,22(20),4159-4175. |
MLA | Zeng XH,et al."Hunting stability of high-speed railway vehicles on a curved track considering the effects of steady aerodynamic loads".JOURNAL OF VIBRATION AND CONTROL 22.20(2016):4159-4175. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
a2016-117.pdf(1572KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论