Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Crash Performance Evaluation of Hydro-formed Automotive DP-Steel Tube Considering Welding Heat Effects

용접부의 영향을 고려한 하이드로포밍된 자동차용 DP강관의 충돌 특성 평가

  • 정경환 (서울대학교 재료공학부) ;
  • 권혁선 (POSCO 기술연구소 자동차가공 연구그룹) ;
  • 박성호 (POSCO 기술연구소 자동차가공 연구그룹) ;
  • 노동성 ((주)프론틱스) ;
  • 정관수 (서울대학교 재료공학부, 지능형 텍스타일시스템)
  • Published : 2006.11.01
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Abstract

In order to numerically evaluate automotive hydro-formed DP-steel tubes on crash performance considering welding heat effects, the finite element simulations of crash behavior were performed for hydro-formed tubes with and without heat treatment effects. This work involves the mechanical characterization of the base material and the HAG-welded zone as well as finite element simulations of the crash test of hydro-formed tubes with welded brackets and hydro-forming of tubes. The welding heat effects on the crash performance are evaluated in efforts to improve the process optimization procedure of the engine cradle in the design stage. In particular, FEM simulations on indentations have been performed and experimentally verified for material properties of weld zone and heat affected zone.

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References

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