철도 차량 전두부 충돌 피해 저감을 위한 Protective shell frame의 위상 최적화에 관한 연구

The study on Topology Optimization for Crashworthiness enhancement in Protective shell frame of Rolling Stock leading-cab

  • 김현준 (성균관대학교 기계공학부 대학원) ;
  • 김세훈 (성균관대학교 기계공학부 대학원) ;
  • 정현승 (한국철도기술연구원 차량성능연구팀) ;
  • 권태수 (한국철도기술연구원 차량성능연구팀) ;
  • 서명원 (성균관대학교 기계공학부)
  • 발행 : 2007.05.17

초록

The leading-cab (high energy absorption area) of rolling stock directly is impacted on the frontal crash unlike other cabs. Thus, leading-cab has a structurally complex shape to solve getting concentrated loads. However, in order to enhance structural performance and to achieve the weight reduction of cab, changing the sizes and adjusting the distance of members do not take an effective result. Therefore, in design phase, to find the material arrangement which helps structural capacity be better should be done. This research applies the topology optimization to concept design of protective shell frame on strategy of crush energy absorption with considering pressure and vertical loads acting on the principal part of leading-cab. In this research, topology optimization method focuses on structural design, and which yields optimal material arrangement under given loads and boundary conditions using density method which has the density of material as design variables. Finally, this research presents optimal material arrangement and structure of protective shell frame on given loads with applying topology optimization.

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