A Study on Crashworhiness Assessment and Improvement of Tilting Train Made of Sandwich Composites

Authors: Hyung-Jin Jang, Kwang-Bok Shin, Sung-Ho Han

Abstract:

This paper describes the crashworthiness assessment and improvement of tlting train made of sandwich composites. The crashworhiness assessment of tilting train was conducted according to four collision scenarios of the Korean railway safety law. Collision analysis was carried out using explicit finite element analysis code LS-DYNA 3D. The finite element model consists of 3-D finite element model and 1-D equivalent model to save the finite element modeling and calculation time. It found that the crashworthiness analysis results were satisfied with the performance requirements except the crash scenario-2. In order to meet the crashworthiness requirements for crash scenario-2, the stiffness reinforcement for the laminate composite cover and metal frames of cabmask structure were proposed. Consequentially, it has satisfied the requirement for crash scenario-2.

Keywords: Crashworthiness, collision scenario, Korean railway safety law, sandwich composite, tilting train.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1054887

References:

[1] K. B. Shin, D. H. Koo, S. H. hahn and K. J. Park, "A study on material selection of the carbody structure of korean tilting train express(TTX) through the verification of design requirements," The Korean society for railway, Vol. 7, No. 2, 2004 pp.77-84.
[2] S. I. Seo, H. S. Mun and K. Y. Eum, "A study on the construction of reliability centered maintenance system for korean tilting train," The Korean society for railway, Vol. 10, No. 5, 2007, pp.520-526.
[3] T. David, "Passenger Rail Train-to-Train Impact Test Volume I : Overview and Selected Results," Final Report, DOT/FRA/ORD, 2003
[4] K. B. Shin, H. Y. Ko, and S. H. Cho, "A Study on Crashworhiness and Rollover Characteristics of Low-Floor Bus made of Honeycomb Sandwich Composites," Journal of The Korean Society for Composite Materials, Vol. 21, No. 1, 2008, pp. 22-29.
[5] J. Y. Lee, K. B. Shin, and J. C. Jeong, "Simulation of Low Velocity Impact of Honeycomb Sandwich Composite Panels for The Bimodal Tram Application," Journal of The Korean Society for Composite Materials, Vol. 20, No. 4, 2007, pp. 42-50.
[6] H. C. Lee, and J. S. Koo, "Crashworthiness Analysis of the Urban Maglev Vehicle according to Korean Railway Safety Law and Urban Transit Safety Law," The Korean Society of Automotive Engineers, Vol. 17, No. 5, 2009, pp. 1-139.
[7] Y. Ujita, K. Funatsu, and Y. Suzudi, "Crashworthiness Investigation of Railway Carriage," Q. R. of RTRI, Vol. 44, No. 1, 2003, pp. 28-33.
[8] M. Y. Park, Y. I. Park, and J. S. Jeong, "Equivalent Modeling Technique for 1-D Collision Dynamics Using 3-D Finite Element Analysis of Rollingstock," The Korean society for railway, Vol. 13, No. 2, 2010 pp.131-250.
[9] MOCT Ordiance 455 (2007) : Regulations on the Railway Safety Criterion of Rolling Stock.