Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 32, Issue 3-4, Pages 472-479Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2004.09.018
Keywords
gradient-enhanced continuum; localized failure; plasticity; damage; composite
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The paper briefly reviews a set of existing higher-order gradient models. Attention is focused on the gradient plasticity formulation with a Laplacian-dependent yield condition and the gradient damage theory with an additional averaging equation for an equivalent strain measure. Their regularization properties and discretization requirements are discussed. A one-dimensional tensile bar localization benchmark is used to confront the features of the models. An application of the models in a two-dimensional wave propagation problem is then presented. (C) 2004 Elsevier B.V. All rights reserved.
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