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Drucker yield function in a form of the second and third stress invariants is transformed into an anisotropic form by introducing a fourth order linear tensor. The effect of the third stress invariant is calibrated for BCC and FCC metals. The anisotropic yield function is applied to model anisotropic yielding of AA2008 T4. The proposed yield surface is compared with those of the Hill48 and Yld2000-2d...
Finite Element formulation is developed for a recently proposed asymmetrical yield function [7] with the dependence on the stress invariants for pressure sensitive metals. The asymmetric yield function [7] is implemented into ABAQUS User Material Interface. Numerical simulations are performed for AZ31B magnesium sheet alloy for the verification purpose. Simulations are conducted under uniaxial tension...
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