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Theoretical cross-wind speed against rail vehicle derailment considering the cross-running wind of trains and the dynamic wheel-rail effects

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Abstract

In this paper, a theoretical formula was proposed that predicts the derailment index due to a cross wind applied to a rail vehicle considering the cross running wind condition of two running trains as well as the dynamic wheel-rail effects. The recently developed derailment theory on a wheelset was applied to this new cross wind derailment formula. Contrary to the conventional formulas, this new derailment formula was derived considering a dynamic derailment coefficient (Q/P) under normal running, the friction coefficient between the wheel and the rail, the wheel load variation, the cross running wind effects, and the cross wind. Using this proposed formula, the derailment pattern and the critical cross wind speed of derailment could be predicted for various cross running wind conditions of two running trains. Finally, for some typical examples, the results of this proposed formula were compared and verified with those of the conventional formulas and the numerical simulation of multi-body dynamics software, Recurdyn.

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Author information

Authors and Affiliations

  1. Department of Rolling Stock System, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 139-743, Korea

    Myung Su Kim, Geo Young Kim, Hyun Tae Kim & Jeong Seo Koo

Authors
  1. Myung Su Kim
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  2. Geo Young Kim
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  3. Hyun Tae Kim
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  4. Jeong Seo Koo
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Corresponding author

Correspondence to Jeong Seo Koo.

Additional information

Recommended by Associate Editor Cheolung Cheong

Myung Su Kim is a master degree. He received his master degree in rolling stock system from Seoul National University of Science and Technology, Seoul, Korea. His research interests include theory of derailment.

Jeong Seo Koo is a Professor of Department of Rolling Stock System, Seoul National University of Science and Technology, Seoul, Korea. He received his doctor degree in Mechanical Engineering from KAIST (Korea Advanced Institute of Science and Technology). His research interests include derailment and crashworthiness of high speed train.

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Kim, M.S., Kim, G.Y., Kim, H.T. et al. Theoretical cross-wind speed against rail vehicle derailment considering the cross-running wind of trains and the dynamic wheel-rail effects. J Mech Sci Technol 30, 3487–3498 (2016). https://doi.org/10.1007/s12206-016-0708-2

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  • DOI: https://doi.org/10.1007/s12206-016-0708-2

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