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[생산기술부문] 판재의 성형한계에 대한 변형경로 의존성에 대한 연구
손현성(Hyunsung Son),정승호(Seungho Jung),한수식(Sooshik Han),김영석(Youngsuk Kim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper deals with the analytical study for predicting the path dependent forming limit for bilinear strain paths. To predict the forming limit diagram the analytical procedure was performed within the framework of Marciniak and Kuczynski approach by introducing the effect of the existence of strain gradient over the stretching punch. The predicted path dependent forming limit of anisotropic sheet was compared with experimental ones. It is found that the predicted path dependent forming limits are in good agreement with those experimental data.