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철도차량 충돌시 선두차량의 타고오름량 예측 연구

A Study on Prediction of Overriding Behavior Leading Vehicle in Train Collision

  • 김준우 (서울과학기술대학교 철도차량시스템공학과) ;
  • 구정서 (서울과학기술대학교 철도차량시스템공학과) ;
  • 김거영 (서울과학기술대학교 철도차량시스템공학과) ;
  • 박정필 (서울과학기술대학교 철도차량시스템공학과)
  • Kim, Jun Woo (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) ;
  • Kim, Geo Young (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Park, Jeong Pil (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology)
  • 투고 : 2015.12.16
  • 심사 : 2016.06.29
  • 발행 : 2016.08.01

초록

본 연구에서는 철도차량의 대형사고의 주요원인 되는 타고오름 충돌에 대해 이론 모델을 정립하여 선두차량의 타고오름 거동에 대한 이론식을 도출하였다. 이론식을 검증하기 위하여 상용 소프트웨어인 LS-DYNA를 사용하여 이론모델과 동일한 단순 2차원 모델과 실제 동력대차 모델이 적용된 단순 3차원 모델을 만들어 시뮬레이션으로 비교하였다. 타고오름 현상에서 가장 중요한 전두 완충기 수직변위에 대해 시뮬레이션과 이론식을 비교한 결과 최대 편차율은 0.5 [%]과 3.9 [%] 발생하여 이론식이 실제 모델에도 잘 적용될 수 있음을 확인하였다. 또한, 고무 완충기와 유압 버퍼 2가지를 적용한 여러 가지 충돌조건에 대해 이론식을 적용하여 선두 차량 간 타고오름 량을 분석하고, 사고 후 재현 시뮬레이션이나 전두부 충돌완충 설계 시 활용할 수 있는 이론적 방법을 제시하였다.

In this study, we derived an theoretical equation, using a simplified spring-mass model for the rolling stock, to obtain the overriding behavior of a leading vehicle, which is considered as the main factor in train accidents. To verify the derived equation, we created a simple 2D model based on the theoretical model, and a simple 3D model considering the characteristics of the power bogie. We then compared the theoretical results with the simulation results obtained using LS-DYNA. The maximum relative derivations in the vertical displacements at the first end-buffer, which is the most important point in overriding, were 3.5 [%] and 1.7 [%] between the two results. Further, we evaluated collision-induced overriding displacements using the theoretical equation for a rubber draft gear, a hydraulic buffer under various collision conditions. We have suggested a theoretical approach for the realization of overriding collision accidents or the energy absorption design of the front end of trains.

키워드

참고문헌

  1. Jung, H. S., Son, S. W., Kwon, T. S. and Kim, J. S., 2015, "Study on Computational Simulation of a Metro Collision Accident and Improvement of Passive Safety," Trans. Korean Soc. Mech. Eng. A, Vol. 39, No. 9, pp. 885-892. https://doi.org/10.3795/KSME-A.2015.39.9.885
  2. Kwak, S. L., Park, C. W., Wang, J. B. and Cho, Y. O., 2012, "A Study on the Utilization of Railway Accident Data," Korean Society for Railway Autumn Conference, pp. 571-575.
  3. European Committee for Standardization, 2010, "The European Standard EN15227 : Railway Applications-Crashworthiness Requirement for Railway Vehicle Bodies".
  4. Han, H. S. and Koo, J. S., 2002, "Simulation of Train Crashes in Three Dimensions," Journal of Korean Soc. Railway, Vol. 5, No. 3, pp. 116-124.
  5. Kim, G. Y., Koo, J. S. and Kwon, T. S., 2011, "Study on a 2-Dimensional Dynamic Modeling Technique to Analyze the Overriding Phenomena of Rolling Stock," Journal of Korean Soc. Railway, Vol. 14, No. 1, pp. 11-18. https://doi.org/10.7782/JKSR.2011.14.1.11
  6. Micahael, C., Karina, J., Partricia, L., Kristine, S., Benjamin, P. and David, T., 2011, "Technical Criteria and Procedures for Evaluating the Crashworthiness and Occupant Protection Performance of Alternatively Designed Passenger Rail Equipment for Use in Tier/ Service," U.S. Department of Transportation Federal Railroad Administration.
  7. Kim, G. Y. and Koo, J. S., 2010, "A Study on Overriding Analysis Using Mathematical Model of Railway Vehicle," The Korean Society of Automotive Engineers, pp. 1907-1908.
  8. Jin, S. Z., Jung, H. S., Kwon, T. S. and Kim, J. S., 2015, "A Study on 3-D Simulation for Override Evaluation of Urban Train," The Korean Society of Mechanical Engineers Autumn Conference, pp. 51-52.
  9. LSTC, LS-DYNA Keyword User's Manual Version 971.
  10. https://www.oleo.co.uk