Title: Modelling of plastic anisotropy based on texture and dislocation structure
Authors: Hiwatashi, S ×
Van Bael, Albert
Van Houtte, Paul
Teodosiu, C #
Issue Date: Dec-1997
Publisher: Elsevier science bv
Series Title: Computational materials science vol:9 issue:1-2 pages:274-284
Abstract: Anisotropy and work hardening behaviour are the most significant material properties in sheet metal forming. Beside the initial anisotropy due to crystallographic texture, anisotropic hardening due to the evolution of the dislocation structure is observed at large prestrains. The developed model is a mixed hardening model in which the shape of the yield locus is generated from the texture and the dislocation structures are responsible for isotropic hardening and kinematic hardening. This microstructural evolution is modelled with three internal stare variables and their evolution equations. Furthermore an elastoplastic tangent modulus is derived from the plasticity model. The model is constructed in the framework of dual potentials bath in deviatoric stress space and plastic strain rate space. Finally, the flow stress evolution is computed for several strain-path changes. (C) 1997 Elsevier Science B.V.
ISSN: 0927-0256
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Mechanical Metallurgy Section (-)
Technologiecluster Materialentechnologie
Materials Technology TC, Technology Campus Diepenbeek
× corresponding author
# (joint) last author

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