Application of Barlat’s Yld 2000-2d Yield Criterion to Predict the Anisotropic Response of Stainless Steel

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© 2021, The Minerals, Metals & Materials Society.The plastic anisotropic response of stainless steel materials is investigated in this paper by using Barlat’s Yld 2000-2d yield criterion. A new set of anisotropy coefficients is proposed and calibrated based on material experimental data. The new set of coefficients for the Lankford anisotropy coefficient, normalized yield stress, and equal biaxial stress were numerically obtained using the Newton–Raphson method. Study cases for AISI 409L and AISI 430 materials are presented and discussed. Correlations between predictions and experimental results indicate that Barlat’s yield stress criterion and plastic stress potential for stainless materials are not coincident. Hence, the Barlat’s non-associate flow rule gives better fitting with the experimental Lankford’s coefficient of anisotropy results.

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