소성∙가공 (Transactions of Materials Processing)

  • 제11권5호
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  • Pages.457-464
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  • 2002
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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직접격자 사상법을 이용한 차체 구조물의 유한요소 역해석 및 성형효과를 고려한 충돌해석

Inverse Finite Element Analysis of Autobody Structures with a Direct Mesh Mapping Method for Crash Analysis Considering Forming Effets

  • 김승호 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과)
  • 발행 : 2002.09.01
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초록

A finite element inverse analysis is utilized to consider forming effects of an S-rail on the assessment of the crashworthiness with small amount of computation time. A crash analysis can be directly performed after the inverse simulation of a forming process without a smoothing or remeshing scheme. The direct mesh mapping method is used to calculate an initial guess from a sliding constraint surface that is extracted from the die and punch set. Analysis results demonstrate that energy absorption of structures is increased when simulation considers forming effects of thickness variation and work hardening. The finite element inverse analysis is proved to be an effective tool in consideration of forming effects for the crash analysis.

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참고문헌

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  9. 김승호, 김세호, 허 훈, 2001, '다단계 유한요소 역해석을 이용한 세장비가 큰 직사각컵 성형 공정의 해석', 한국소성가공학회지, Vol. 10, No.2, pp.389-395.
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피인용 문헌

  1. A Study on the Generation of Initial Shape for the Initiation of Optimal Blank Design Sequence vol.13, pp.1, 2004, https://doi.org/10.5228/KSPP.2004.13.1.090