Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A comparative study between micro- and macro-mechanical constitutive models developed for complex loading scenarios
AU - Jeong, Y.
AU - Barlat, F.
AU - Tomé, C.N.
AU - Wen, W.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - 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.
AB - 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.
KW - Bauschinger effect
KW - A. Dislocations
KW - A. Yield condition
KW - B. Constitutive behavior
KW - B. Anisotropic material
U2 - 10.1016/j.ijplas.2016.07.015
DO - 10.1016/j.ijplas.2016.07.015
M3 - Journal article
VL - 93
SP - 212
EP - 228
JO - International Journal of Plasticity
JF - International Journal of Plasticity
SN - 0749-6419
ER -