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A Study on Prediction Method of Derailment Behaviors due to Cross-wind Considering Dynamic Effects of Wheel-rail Interaction

차륜-레일의 동적효과를 고려한 측풍 원인 탈선 예측방법 연구

  • Kim, Myung Su (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Koo, Jeong Seo (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology)
  • 김명수 (서울과학기술대학교 철도차량시스템공학과) ;
  • 구정서 (서울과학기술대학교 철도차량시스템공학과)
  • Received : 2013.08.12
  • Accepted : 2014.05.14
  • Published : 2014.07.01

Abstract

This paper proposes a new method for predicting the derailment of a running train under cross-wind conditions, using the single wheelset derailment theory. The conventional theories used for predicting the derailment due to cross-winds were developed under the assumption that derailment will always be of the roll-over type, thus neglecting other possible types such as wheel-climbing, which may occur under special driving conditions. In addition, these theories do not consider running conditions such as dynamic wheel-rail interactions and friction effects. The new method considers the effects of dynamic wheel-rail interaction as well as those of lateral acceleration, rail cant, and cross-winds. The results of this method were compared and verified with those of the conventional methods and numerical simulations.

Keywords

Wheel Load;Wheel Unloading;Single Wheelset;Cross-Wind;Wheel-climbing Derailment;Roll-over Derailment

Acknowledgement

Supported by : 한국연구재단

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