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http://dx.doi.org/10.7782/JKSR.2011.14.1.11

Study on a 2-Dimensional Dynamic Modeling Technique to Analyze the Overriding Phenomena of Rollingstock  

Kim, Geo-Young (서울과학기술대학교 철도전문대학원)
Koo, Jeong-Seo (서울과학기술대학교 철도전문대학원)
Kwon, Tae-Soo (한국철도기술연구원)
Publication Information
Journal of the Korean Society for Railway / v.14, no.1, 2011 , pp. 11-18 More about this Journal
Abstract
This paper proposed a new 2-D multi-body dynamic modeling technique to analyze overriding behaviors taking place during train collision. This dynamic model is composed of nonlinear springs, dampers and masses by considering the deformable characteristics of carbodies as well as energy absorbing structures and components. By solving this dynamic model for rollingstock, energy absorbing capacities of collision elements, accelerations of passenger sections, impact forces applied to interconnecting devices, and overriding displacements can be well estimated. For a case study, we chose KHST (Korean High Speed Train), obtained crush characteristic data of each carbody section from 3-D finite element analysis, and established a 2-D multi-body dynamic model. This 2-D dynamic model was simulated under the train-to-train collision scenarios, and evaluated with 3-D virtual testing model. It was founded from the simulation results that this 2-D dynamic model could well predict overriding behaviors, and the modeling technique of carbody deformation was very important in overriding estimation.
Keywords
Multibody Dynamic Model; Crashworthiness; Overriding Behavior; KHST; Finite Element Analysis;
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