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On physics‐based crystal plasticity models: Application to virtual material testing of sheet metals
Author(s) -
Pagenkopf Jan,
Baiker Maria,
Helm Dirk
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410154
Subject(s) - plasticity , crystal plasticity , dislocation , anisotropy , yield surface , materials science , yield (engineering) , microstructure , crystal (programming language) , work (physics) , field (mathematics) , sheet metal , statistical physics , computer science , physics , mechanical engineering , finite element method , metallurgy , mathematics , engineering , composite material , thermodynamics , optics , constitutive equation , pure mathematics , programming language
It is possible to pursue a multi‐scale modeling approach for sheet forming simulations by applying the concept of virtual material testing to determine the yield surface from the microstructure of a given material. Full‐field simulations with phenomenological crystal plasticity models are widely used for this kind of investigations. However, recent developments focus on incorporating physical quantities like dislocation density into these models. In this work, a dislocation density based crystal plasticity model is used to investigate the plastic anisotropy of the deep drawing steel DC04. In particular, we focus on the prediction of R‐values, which can be used to calibrate macroscopic plasticity models. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)