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

철도차량 충돌시 선두차량의 타고오름량 예측 연구

Kim, Jun Woo;Koo, Jeong Seo;Kim, Geo Young;Park, Jeong Pil
김준우;구정서;김거영;박정필

  • Received : 2015.12.16
  • Accepted : 2016.06.29
  • Published : 2016.08.01

Abstract

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.

Keywords

Overriding;Free-body Diagram;Theoretical Model;Leading Vehicle;Pitching

References

  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.
  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

Acknowledgement

Supported by : 국토교통부