Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of The Clearance on Core Deformation of Sandwich Plate during U-bending

U-bending 공정에서 틈새간격이 샌드위치판재의 내부구조 전단변형에 미치는 영향

  • 성대용 (KAIST 기계항공시스템학부 대학원) ;
  • 정창균 (KAIST 기계항공시스템학부 대학원) ;
  • 심도식 (KAIST 기계항공시스템학부 대학원) ;
  • 양동열 (KAIST 기계항공시스템학부) ;
  • 정완진 (서울산업대학교 금형설계학과)
  • Published : 2008.05.08
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Abstract

In this study, a macroscopic approach was carried out to gain insight into the bending mechanism of metallic sandwich plates. Shear force-punch stroke curves for various clearances were analytically derived for mild steel (CSP 1N) sandwich plates with the total thickness of 3 mm and 0.5 mm face sheets. As the clearance increases, shear force of the inner structures and sensitivity of punch stroke decrease. These data are useful to derive a criterion of judgment for core shear failure and de-bonding failure during U-bending.

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