Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Experimental Drawbead Dies for Measuring Drawbead Forces

드로우비드력 측정용 실험금형

  • 문성준 (한양대학교 일반대학원, 자동차공학과) ;
  • 이명규 (한국기계연구원, 재료연구소) ;
  • 금영탁 (한양대학교 기계공학부)
  • Published : 2008.11.01
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Abstract

A drawbead die for the experimental determination of drawbead forces was newly introduced in this paper. While the conventional Nine's drawbead die inevitably includes effects of a blank holding force on the measured drawbead forces, the new drawbead die excludes it by removing the blank holder contact in the dieface. Therefore, the new drawbead die can provide more realistic drawbead forces without considering somewhat arbitrary effect of blank holder with the computational procedure of forming process. The drawbead opening force and restraining force obtained by adopting the two experimental dies were compared for the validation of accuracy in the FEM simulation of automotive fender forming process. The compared section strains and draw-ins confirmed that the present drawbead die provides better drawbead forces for an accurate FEM simulation of sheet metal forming process.

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References

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Cited by

  1. Equivalent drawbead models for sheet forming simulation vol.16, pp.4, 2010, https://doi.org/10.1007/s12540-010-0812-2