Journal
ACTA MATERIALIA
Volume 92, Issue -, Pages 197-208Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2015.04.013
Keywords
Cracks; Dislocations; Finite strains; Phase-field; Buckling
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A new 3D continuum model is developed to simultaneously describe cracks and dislocations in materials undergoing finite strain deformations. Significant advances are made to account for fracturing in a cubic symmetrical system and to correctly model the microscopic dislocation properties into a Time-Dependent Ginzburg Landau formalism. In addition, the interaction between dislocations and free borders (crack lips, surfaces...) is naturally described. As an example, the model is used to investigate the effects of plasticity on the delamination and buckling of thin films deposited on substrates. It may also be helpful in any other situation where cracks and dislocations take place and in which finite strain effects must be considered. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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