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A comparative study between micro- and macro-mechanical constitutive models developed for complex loading scenarios

Title
A comparative study between micro- and macro-mechanical constitutive models developed for complex loading scenarios
Authors
Jeong, Y.Barlat, F.Tom?, C.N.Wen, W.
Date Issued
Jun-2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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. ? 2016 Elsevier Ltd.
URI
http://oasis.postech.ac.kr/handle/2014.oak/50642
ISSN
0749-6419
Article Type
Article
Citation
INTERNATIONAL JOURNAL OF PLASTICITY, vol. 93, page. 212 - 228, 2017-06
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BARLAT FREDERIC GERARDBARLAT, FREDERIC GERARD
Ferrous & Energy materials Technology
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