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

열차의 타고오름 해석을 위한 2차원 충돌동역학 모델링 기법 연구

  • 김거영 (서울과학기술대학교 철도전문대학원) ;
  • 구정서 (서울과학기술대학교 철도전문대학원) ;
  • 권태수 (한국철도기술연구원)
  • Received : 2010.11.16
  • Accepted : 2011.01.12
  • Published : 2011.02.26

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.

Acknowledgement

Supported by : 한국철도기술연구원

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