Comparison of full field predictions of crystal plasticity simulations using the Voce and the dislocation density based hardening laws

Crystal plasticity modeling and simulation is an important predictive tool for understanding the deformation of polycrystalline materials under diverse loading conditions. The validity accuracy these simulations depend on choice constitutive law. One main components law plastic hardening This study, therefore, focuses effect phenomenological Voce dislocation density based full field predictions crystal simulations. were performed using a three dimensional (3D) fast Fourier transform-based elasto-viscoplastic (EVP-FFT) micromechanical solver tensile copper. Simulation results show that local distribution stress strongly depends rule. Average texture characteristics predicted by both laws do not vary significantly. However, spatial orientation evolution (micro-texture) varies with increasing strain. For law, calculated from threshold more homogeneous than Finally, our highlight simple storage–recovery model insufficient to explain dependence stored energy distribution. Hence, careful prediction localized fields.