Tensile Test using Plasticity Abaqus UMAT Subroutine (Miehe, et al.)

Tensile test with Abaqus UMAT Subroutine for von Mises perfect plasticity at large strains. Stress update is based on the approach described in: Miehe, Christian, and Matthias Lambrecht. "Algorithms for computation of stresses and elasticity moduli in terms of Seth–Hill's family of generalized strain tensors." Communications in numerical methods in engineering 17.5 (2001): 337-353. Miehe, Christian, N. Apel, and Matthias Lambrecht. "Anisotropic additive plasticity in the logarithmic strain space: modular kinematic formulation and implementation based on incremental minimization principles for standard materials." Computer Methods in Applied Mechanics and Engineering 191.47-48 (2002): 5383-5425.

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