Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

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
Download PDF
⟨ Previous Next ⟩

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.

본 논문에서는 단일윤축 탈선이론을 적용하여 측풍 조건에서 주행 중인 철도차량의 탈선을 예측하는 방법을 제시하였다. 기존 연구에서는 측풍에 의한 탈선은 모두 전복탈선이라고 가정하여 탈선 예측 이론을 개발하였다. 그러나 이러한 가정은 특수한 주행조건하에서 차륜 타고오름 탈선의 가능성을 무시하고 있다. 또 기존의 측풍 탈선 이론은 주행 중 발생하는 차륜-궤도 사이의 마찰력, 동적상호작용과 같은 주행조건이 탈선에 미치는 영향을 고려할 수 없었다. 본 논문의 방법은 차륜-궤도 사이의 동적 영향, 횡가속도 및 켄트 영향, 측풍 영향 등을 동시에 고려할 수 있었다. 본 이론의 결과를 기존 이론 및 시뮬레이션 결과와 비교하여 타당성을 검증하였다.

Keywords

References

  1. Zeng, J. and Wu, P., 2008, "Study on the Wheel/Rail Interaction and Derailment Safety," Wear, Vol 265, No. 9-10, pp. 1452-1459. https://doi.org/10.1016/j.wear.2008.01.031
  2. Korean Ministry of Construction and Transportation, 2007, "Crashworthiness Requirement for Rolling Stock Safety," MOCT Notification, NO. 2007-278.
  3. Cho, H. J. and Koo, J. S., 2012, "A Numerical Study of the Derailment Caused by Collision of a Rail Vehicle Using a Virtual Testing Model," Vehicle System Dynamics, Vol. 50, No. 1, pp. 79-108. https://doi.org/10.1080/00423114.2011.563860
  4. Yang, Y. B. and Wu, Y. S., 2002, "Dynamic Stability of Trains Moving over Bridges Shaken by Earthquakes," Journal of Sound and Vibration, No. 258, pp. 65-94.
  5. Nam, S. W., 2012, "Theoretical Analysis on Overturn Safety of Train Affected by Wind Pressure," Journal of the Korean Society for Railway, Vol. 15, No. 15, pp. 537-542 https://doi.org/10.7782/JKSR.2012.15.6.537
  6. Yongquan, D. and Xinbiao, X., 2009, "Effect of Cross-Wind on High-Speed Vehicle Dynamic Derailment," Logistics, Vol. 5, pp. 2287-2293.
  7. Kunieda, M., 1972, "Theoretical Study on the Mechanics of Overturn of Railway Rolling Stock," RTRI Railway Technical Research Report, No. 793, pp.177-186.
  8. Koo, J. S. and Choi, S. Y., 2012, "Theoretical Development of a Simplified Wheelset Model to Evaluate Collision-induced Derailments of Rolling Stock," Journal of Sound and Vibration, Vol. 331, No. 13, pp. 3172-3198. https://doi.org/10.1016/j.jsv.2012.02.014
  9. Koo, J. S. and Oh, H. S., 2013, "Study of Influence of Wheel Unloading on Derailment Coefficient of Rolling Stock," Trans. Korean Soc. Mech. Eng. A, Vol. 37, No. 2, pp. 117-185. https://doi.org/10.3795/KSME-A.2013.37.2.177
  10. Ham, Y. S., 2010, "The Evaluation of Running Safety in the Double Connection Operation for KTX-Sancheon Train," 2010 Fall Annual Meeting of the Korean Soc. Mech. Eng., pp. 155-156.
  11. Ham, Y. S., 2007, "Evaluation of Running Safety for High Speed Railway Vehicle of when Run Curved Line at High Speed," 2007 Spring Conference of the Korean Soc. Mech. Eng., pp. 6-9.
  12. RecurDyn Help Library and Theoretical Manual, FunctionBay, Inc., http://www.functionbay.co.kr, 2011