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- W2247294176 abstract "Sheet metals generally exhibit a considerable anisotropy which highly influences the final geometry and dimensions of the specimen. Generally, the evolution of anisotropy is not considered in the formulation of a constitutive model. We studied the effects of plastic work on the evolution of anisotropic behavior for the interstitial free steel grade IF 300 commonly used in deep drawing applications. The determination of anisotropy parameters is performed by a series of tensile tests on specimens extracted at seven different orientations with respect to the rolling direction. Strain measurements have been performed by means of a full-field non-contact optical measurement technique, Digital Image Correlation (DIC). As we show in this paper, based on our experimental observations, the coefficients of the anisotropic yield stress and plastic potential function (in case of non-associated flow rule) should preferably be updated with increasing plastic work. This paper presents a simple method using polynomial functions to update the instantaneous Lankford coefficients at different orientations with respect to the rolling direction. Based hereon, subsequently the anisotropy parameters and consequently the shape of the yield locus can be updated." @default.
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- W2247294176 date "2012-01-01" @default.
- W2247294176 modified "2023-09-27" @default.
- W2247294176 title "Plastic strain induced anisotropy in sheet metals" @default.
- W2247294176 hasPublicationYear "2012" @default.
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