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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Anisotropic Damage Model with Unilateral Effect and Sliding Friction for Brittle Materials
verfasst von : Abdelkibir Benelfellah, Arnaud Frachon, Micheal Gratton, Micheal Caliez, Didier Picart
Erschienen in: Design and Modeling of Mechanical Systems
Verlag: Springer Berlin Heidelberg
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The opening-closing effect of the microcracks is a kinematic phenomenon usually modeled using a set of damage variables. The influence of microcracks must be taken into account depending on their opening or closing state, which results in different elasticity for the same level of damage. In this work, the volumetric, deviatoric and tangential model denoted as V-D-T is chosen and modified by introducing the opening-closing effect into the free energy. This model is coupled with a sliding-friction mechanism of the microcrack lips when the latter are closed. Simulations of compression tests with confinements are presented to validate the model.