Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Sectional Finite Element Analysis of Forming Process of Aluminum Sandwich Sheet by Bending Augmented Membrane Elements

굽힘 첨가 박막요소에 의한 알루미늄 샌드위치 판재 성형공정의 단면 유한요소 해석

  • 이재경 (한양대학교 대학원) ;
  • 금영탁 (한양대학교 기계공학부) ;
  • 유용문 (자동차부품연구원 경량소재실) ;
  • 이명호 (자동차부품연구원 경량소재실)
  • Published : 2001.04.01
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Abstract

A sectional FEA program is developed lot analyzing forming processes of sandwich sheets, which are intensively used recently as a lightweight material of an automobile body. The aluminum sandwich sheet consists of two aluminum skins and a polyprophylen core in between. The aluminum sandwich sheet is dominantly effected by the bending effects in small radius of curvature, so that an appropriate description of bending effects is required to analyze the forming processes. For the evaluation of bending effects, the bending equivalent forces are calculated from the bending moment computed using the curvature of the tool and are added to the membrane stretch forces. To verify the validity of the developed program the sectional FEA results in stretch/draw forming Processes of a square cup and draw forming Processes of an outer hood panel were compared with the measurements.

Keywords

References

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