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http://dx.doi.org/10.3795/KSME-A.2017.41.2.095

Study on the Prediction of Lateral and Yawing Behaviors of a Leading Vehicle in a Train Collision  

Kim, Jun Woo (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology)
Jeong, Eui Cheol (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)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.2, 2017 , pp. 95-101 More about this Journal
Abstract
In this study, we derived theoretical equations for the zigzag movement of a leading vehicle, which is the most frequent behavior in train accidents, by using a simplified spring-mass model for the rolling stock. In order to solve the equations of motion, we applied the Runge-Kutta method, which is the typical numerical analysis method used for differential equations. Furthermore, the lateral displacement of the wheel-set at the wheel-rail interface was estimated using kinetic energy. In order to verify the derived equations, we compared the theoretical and simulated results under various collision conditions. The maximum relative deviations of the lateral displacements were 0.8 [%] ~ 4.7 [%] in light collisions and 0.6 [%] ~ 5.1 [%] under derailment conditions. When an accident is simulated, these theoretical equations can be used to predict the overall behavior and obtain the offset of the body-to-body link as the initial perturbation.
Keywords
Leading Vehicle; Free-Body Diagram; Theoretical Model; Yawing; Runge-Kutta;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Ronald, M., Robert, R. and Lisa, T., 1999, "Investigation and Simulation of Lateral Buckling in Trains," ASME Joint Railroad Conference.
2 Tyrell, D. C., 2002, "Rail Passenger Equipment Accidents and the Evaluation of Crashworthiness Strategies," Journal of Rail and Rapid Transit, Vol. 216, No. 2, pp. 131-147.   DOI
3 Han, H. S. and Koo, J. S., 2002, "Simulation of Train Crashes in Three Dimensions," Korean Society for Railway, Vol. 5, No. 3, pp. 116-124.
4 Kim, G. Y., Cho, H. J. and Koo, J. S., 2008, "A Study on Conceptual Design for Crashworthiness of the Next Generation High-speed EMU," Korean Society for Railway, Vol. 11, No. 3, pp. 300-310.
5 Son, S. W., Jung, H. S., Kim, J. S. and Kwon, T. S., 2010, "The Basic Study on the Lightweight Design of Square Tube Type Energy Absorber for Train," The Korean Society of Automotive Engineers Annual Conference, pp. 3243-3247.
6 Ha, H. K., Jeong, J. H., Lee, J. W. and Park, G. S., 2013, "Strength Evaluation of Obstacle Deflection According to EN15227 and Railroad Safety Act standard," The Korean Society for Railway Autumn Conference, pp. 525-531.
7 Kiusalaas, J., 2007, "Numerical Methods in Engineering With MATLAB," ajin, pp. 302-314.
8 Yu, D. S. and Kim, Y. I., 2001, "Numerical Analysis," kyowoo, pp. 315-346.
9 LSTC, LS-DYNA Keyword User's Manual Version 971
10 https://www.oleo.co.uk
11 Cho, H. J., 2010, "Study on Wheel-rail Models for Prediction of Derailment Behavior After Collision Using Virtual Testing Model," Seoul National University of Science and Technology.