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On the role of dislocation conservation in higher‐order crystal plasticity
Author(s) -
Hirschberger C. B.,
Peerlings R. H. J.,
Brekelmans W. A. M.,
Geers M. G. D.
Publication year - 2009
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200910128
Subject(s) - crystal plasticity , plasticity , dislocation , materials science , order (exchange) , crystallography , deformation (meteorology) , chemistry , composite material , economics , finance
The interactions between individual dislocations contribute significantly to size effects as observed at the plastic deformation of miniaturized structures. When employing a crystal plasticity framework, these interactions are usually captured by an additional balance relation. In this paper we study two approaches to capture dislocation interactions in crystal plasticity that differ by the conservation of dislocations. (© 2009 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)