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

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

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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.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Plasticity
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2210
Subjects:
ID Code:
132444
Deposited By:
Deposited On:
09 Apr 2019 13:30
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 05:09