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CLC number: U270.1+1

On-line Access: 2014-06-04

Received: 2014-02-22

Revision Accepted: 2014-07-17

Crosschecked: 2014-08-26

Cited: 9

Clicked: 9634

Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2014 Vol.15 No.9 P.694-710


Study on the safety of operating high-speed railway vehicles subjected to crosswinds*

Author(s):  Xin-biao Xiao, Liang Ling, Jia-yang Xiong, Li Zhou, Xue-song Jin

Affiliation(s):  . State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

Corresponding email(s):   xsjin@home.swjtu.edu.cn

Key Words:  High-speed railway, High-speed train, Crosswinds, Safety boundary, Derailment

Xin-biao Xiao, Liang Ling, Jia-yang Xiong, Li Zhou, Xue-song Jin. Study on the safety of operating high-speed railway vehicles subjected to crosswinds[J]. Journal of Zhejiang University Science A, 2014, 15(9): 694-710.

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publisher="Zhejiang University Press & Springer",

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%A Xin-biao Xiao
%A Liang Ling
%A Jia-yang Xiong
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%DOI 10.1631/jzus.A1400062

T1 - Study on the safety of operating high-speed railway vehicles subjected to crosswinds
A1 - Xin-biao Xiao
A1 - Liang Ling
A1 - Jia-yang Xiong
A1 - Li Zhou
A1 - Xue-song Jin
J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1400062

A coupled vehicle-track dynamic model is put forward for use in investigating the safety effects of crosswinds on the operation of a high-speed railway vehicle. In this model, the vehicle is modeled as a nonlinear multi-body system, and the ballasted track is modeled as a three-layer discrete elastic support system. The steady aerodynamic forces caused by crosswinds are modeled as ramp-shaped external forces being exerted on the vehicle body. This model was used in a numerical analysis of the dynamic response and dynamic derailment mechanisms of high-speed vehicles subjected to strong crosswinds. The effects of the crosswind speeds, crosswind attack angle, and vehicle speed on the operational safety of the vehicle were examined. The operational safety boundaries of a high-speed vehicle subjected to crosswinds were determined. The numerical results obtained indicate that crosswinds at attack angles of 75° to 90° with respect to the forward direction of the vehicle have a great influence on the safety of operating high-speed railway vehicles. The wheelset unloading limit, which determines the position of the warning boundary dividing the safe operating area and the warning area, is the most conservative, i.e., the safest, criterion to use in assessing the high-speed operational safety of vehicles in crosswinds.



Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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