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.<\/p>\r\n","references":"[1] K. B. Shin, D. H. Koo, S. H. hahn and K. J. Park, \"A study on material\r\nselection of the carbody structure of korean tilting train express(TTX)\r\nthrough the verification of design requirements,\" The Korean society for\r\nrailway, Vol. 7, No. 2, 2004 pp.77-84.\r\n[2] S. I. Seo, H. S. Mun and K. Y. Eum, \"A study on the construction of\r\nreliability centered maintenance system for korean tilting train,\" The\r\nKorean society for railway, Vol. 10, No. 5, 2007, pp.520-526.\r\n[3] T. David, \"Passenger Rail Train-to-Train Impact Test Volume I :\r\nOverview and Selected Results,\" Final Report, DOT\/FRA\/ORD, 2003\r\n[4] K. B. Shin, H. Y. Ko, and S. H. Cho, \"A Study on Crashworhiness and\r\nRollover Characteristics of Low-Floor Bus made of Honeycomb\r\nSandwich Composites,\" Journal of The Korean Society for Composite\r\nMaterials, Vol. 21, No. 1, 2008, pp. 22-29.\r\n[5] J. Y. Lee, K. B. Shin, and J. C. Jeong, \"Simulation of Low Velocity\r\nImpact of Honeycomb Sandwich Composite Panels for The Bimodal\r\nTram Application,\" Journal of The Korean Society for Composite\r\nMaterials, Vol. 20, No. 4, 2007, pp. 42-50.\r\n[6] H. C. Lee, and J. S. Koo, \"Crashworthiness Analysis of the Urban Maglev\r\nVehicle according to Korean Railway Safety Law and Urban Transit\r\nSafety Law,\" The Korean Society of Automotive Engineers, Vol. 17, No.\r\n5, 2009, pp. 1-139.\r\n[7] Y. Ujita, K. Funatsu, and Y. Suzudi, \"Crashworthiness Investigation of\r\nRailway Carriage,\" Q. R. of RTRI, Vol. 44, No. 1, 2003, pp. 28-33.\r\n[8] M. Y. Park, Y. I. Park, and J. S. Jeong, \"Equivalent Modeling Technique\r\nfor 1-D Collision Dynamics Using 3-D Finite Element Analysis of\r\nRollingstock,\" The Korean society for railway, Vol. 13, No. 2, 2010\r\npp.131-250.\r\n[9] MOCT Ordiance 455 (2007) : Regulations on the Railway Safety\r\nCriterion of Rolling Stock.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 62, 2012"}