NDLI: Determination method of load balance ranges for train operation safety under strong wind

Content Provider	Springer Nature Link
Author	Tian, Hong qi
Copyright Year	2015
Abstract	The aerodynamic performances of a passenger car and a box car with different heights of windbreak walls under strong wind were studied using the numerical simulations, and the changes of aerodynamic side force, lift force and overturning moment with different wind speeds and wall heights were calculated. According to the principle of static moment balance of vehicles, the overturning coefficients of trains with different wind speeds and wall heights were obtained. Based on the influence of wind speed and wall height on the aerodynamic performance and the overturning stability of trains, a method of determination of the load balance ranges for the train operation safety was proposed, which made the overturning coefficient have nearly closed interval. A min(\|A $_{1}$\|+\|A $_{2}$\|), s.t. \|A $_{1}$\|→\|A $_{2}$\| (A $_{1}$ refers to the downwind overturning coefficient and A $_{2}$ refers to the upwind overturning coefficient) was found. This minimum value helps to lower the wall height as much as possible, and meanwhile, guarantees the operation safety of various types of trains under strong wind. This method has been used for the construction and improvement of the windbreak walls along the Lanzhou-Xinjiang railway (from Lanzhou to Urumqi, China).
Starting Page	1146
Ending Page	1154
Page Count	9
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	22
Issue Number	3
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2015-03-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	strong wind train load balance range overturning coefficient aerodynamic performance Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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