Jeong, Y. and Barlat, F. and Tomé, C.N. and Wen, W. (2017) A comparative study between micro- and macro-mechanical constitutive models developed for complex loading scenarios. International Journal of Plasticity, 93. pp. 212-228. ISSN 0749-6419
Full text not available from this repository.Abstract
Constitutive models developed for simulating plastic response upon strain path changes are combined: 1) a macro-mechanical model based on anisotropic yield function, associated flow rule and distortional hardening using Homogeneous Anisotropic Hardening (HAH) approach; 2) a micro-mechanical model using self-consistent crystal plasticity in conjunction with crystallographic dislocation-density based hardening. The micro-mechanical model is employed to probe the yield surface in order to gain the insight required to construct empirical rules appropriate for the macro-mechanical model. Simulation results of the micro-mechanical model under various loading conditions involving strain path changes and different crystallographic textures are presented. The trends captured in the yield surface evolution predicted by the micro-mechanical model were used to validate and improve the empirical rules used in the HAH model.