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An alternative 3D model for damage induced anisotropy and unilateral effect in microcracked materials

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2003
auteur(s) Welemane Hélène; Cormery Fabrice
journal (abréviation) Journal de Physique IV (J. Phys. IV France)
volume (numéro) 105
pages 329 – 0
résumé A three-dimensional model of damage by microcrack growth is proposed to account for the mechanical behavior of quasi-brittle materials (especially for concrete and rocks). The emphasis is put on the induced anisotropy and on the elastic moduli dependence on the opening and closure of microcracks (unilateral effect). This fomulation is based first on a damage characterization througt the microcrack density distribution, and secondly avoids the use of spectral decompositions generally adopted in literature and wich induce some major inconsistencies.
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