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21-Cr 페라이트계 스테인리스강의 기계적 물성 모델링과 적용
정한용(Hanyong Jung),정양진(Yangjin Chung),박기철(Keecheol Park),남재복(Jaebok Nam) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
In this paper, phenomenological material models describing anisotropic plastic behavior of 21-Cr ferritic stainless steel were investigated using three yield functions of Hill(1948), Barlat and Lian(1989) and Barlat et al.(2003, referred to as Yld2000-2d) criteria. Uniaxial tension and equi-biaxial bulge test were conducted for mechanical properties. Three yield functions calculated from experiments were used for comparing to the one element simulation using LS-DYNA. The results presented that the three directional tensile properties by Yld2000-2d criterion were in good agreement with tensile test Thinning distribution calculated by Yld2000 2d model was compared to those of the real part of door in