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On the robustness of stress integration algorithms for finite single crystal (visco)‐plasticity
Author(s) -
Prüger Stefan,
Kiefer Björn
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900129
Subject(s) - robustness (evolution) , crystal plasticity , plasticity , hardening (computing) , materials science , homogeneous , algorithm , slip (aerodynamics) , single crystal , computer science , mechanics , mathematics , biological system , control theory (sociology) , statistical physics , composite material , crystallography , physics , thermodynamics , artificial intelligence , chemistry , biochemistry , gene , control (management) , layer (electronics) , biology
The accurate determination of the slip activity in single crystal plasticity models is crucial to predict the mechanical response and the reorientation of the crystal. Therefore, a comparison of two rate‐independent and two rate‐dependent formulations of single crystal plasticity is carried out, subject to homogeneous proportional and non‐proportional deformation histories. From the simulation results it is concluded that the robustness of the corresponding stress‐integration algorithm depends on the complexity of the hardening law.