Strain localization of elastic-damaging frictional-cohesive materials: analytical results and numerical verification
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Data publicació2017-04-20
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Abstract
Damage-induced strain softening is of vital importance for the modeling of localized failure in frictional-cohesive materials. This paper addresses strain localization of damaging solids and the resulting consistent frictional-cohesive crack models. As a supplement to the framework recently established for stress-based continuum material models in rate form (Wu and Cervera 2015, 2016), several classical strain-based damage models, expressed usually in total and secant format, are considered. Upon strain localization of such damaging solids, Maxwell's kinematics of a strong (or regularized) discontinuity has to be reproduced by the inelastic damage strains, which are defined by a bounded characteristic tensor and an unbounded scalar related to the damage variable. This kinematic constraint yields a set of nonlinear equations from which the discontinuity orientation and damage-type localized cohesive relations can be derived. It is found that for the
CitacióWu, J., Cervera, M. Strain localization of elastic-damaging frictional-cohesive materials: analytical results and numerical verification. "Materials", 20 Abril 2017, vol. 10, núm. 4, p. 1-27.
ISSN1996-1944
Versió de l'editorhttp://www.mdpi.com/1996-1944/10/4/434
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