Title: Convex fourth and sixth-order plastic potentials derived from crystallographic texture
Authors: Van Bael, Albert ×
Van Houtte, Paul #
Issue Date: Mar-2003
Publisher: E d p sciences
Series Title: Journal de physique iv vol:105 pages:39-46
Abstract: The anisotropic plastic behaviour of metals (without prestrain) can be described rather accurately by means of polycrystalline deformation models based on the Taylor theory. This crystallographic anisotropy can be incorporated into finite-element simulations by means of a semi-analytical approach, using plastic potentials of which the coefficients are derived from the Taylor model and the texture. The convexity of the adopted expressions has since long been a problematic issue. In this paper a new class of potential functions in strain-rate space is introduced. These have the advantage that convexity can be strictly imposed. The new formulation is critically assessed for a bcc material with a sharp model texture consisting of a Gaussian distribution centered around the (100)[011] orientation and with a spread of 11 degrees.
ISSN: 1155-4339
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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