Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Collision Analysis of the Next Generation High-speed EMU Using 3D/1D Hybrid FE Model

3D/1D 하이브리드 유한요소 모델을 이용한 동력 분산형 차세대 고속열차 전체차량의 충돌 해석

  • Kim, Geo-Young (Department of Rolling Stock System Engineering, Seoul National University of Science & Technology) ;
  • Koo, Jeong-Seo (Department of Rolling Stock System Engineering, Seoul National University of Science & Technology)
  • 김거영 (서울과학기술대학교 철도차량시스템공학과) ;
  • 구정서 (서울과학기술대학교 철도차량시스템공학과)
  • Received : 2011.03.25
  • Accepted : 2011.11.03
  • Published : 2012.05.01
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Abstract

In this paper, collision analysis of the full rake for the Next Generation High-speed EMU is conducted using a 3D/1D hybrid model, which combines 3-dimensional (3D) front-end structure of finite element model and 1-dimensional (1D) multi-body dynamics model in order to analyze train collision with a standard 3D deformable obstacle. The crush forces, passengers' accelerations and energy absorptions of a full rake train can be easily obtained through a simulation of a 1D dynamics model composed of nonlinear springs, dampers and masses. Also the obtained simulation results are very similar to those of a 3D model if an overriding behavior does not occur during collision. The standard obstacle in TSI regulation has been changed from a rigid body to a deformable body, and therefore 3D collision simulations should be conducted because their simulation results depends on the front-end structure of a train. According to the obstacle collision analysis of this study, the obstacle collides with the driver's upper structure after overriding over the front-end module. The 3D/1D hybrid model is effective to evaluate a main energy-absorbing module that is frequently changed during design process and reduce the need time of the modeling and analysis when compared to a 3D full car body.

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References

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