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Prediction of Forming Limit in Hydro-Mechanical Deep Drawing of Steel Sheets Using Ductile Fracture Criterion
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  • Prediction of Forming Limit in Hydro-Mechanical Deep Drawing of Steel Sheets Using Ductile Fracture Criterion
  • Prediction of Forming Limit in Hydro-Mechanical Deep Drawing of Steel Sheets Using Ductile Fracture Criterion
저자명
Oh. S.T.,Chang. H.J.,Oh. K.H.,Han. H.N.
간행물명
Metals and materials international
권/호정보
2006년|12권 2호|pp.121-129 (9 pages)
발행정보
대한금속재료학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

It has been observed that the forming limit curve at fracture (FLCF) of steel sheets with a relatively higher ductility limit have linear shapes, similar to those of a bulk forming process. In contrast, the FLCF of sheets with a relatively lower ductility limit have rather complex shapes approaching the forming limit curve at neck (FLCN) towards the equi-biaxial strain paths. In this study, the FLCFs of steel sheets were measured and compared with the fracture strains predicted from specific ductile fracture criteria, including a criterion suggested by the authors, which can accurately describe FLCFs with both linear and complex shapes. To predict the forming limit for hydro-mechanical deep drawing of steel sheets, the ductile fracture criteria were integrated into a finite element simulation. The simulation results based on the criterion suggested by authors accurately predicted the experimental fracture limits of steel sheets for the hydro-mechanical deep drawing process.