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Anisotropic damage model for concrete / J. J. C. Pituba in Journal of engineering mechanics, Vol. 137 N° 9 (Septembre 2011) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 137 N° 9 (Septembre 2011) . - pp.610-624 Titre : Anisotropic damage model for concrete Type de document : texte imprimé Auteurs : J. J. C. Pituba, Auteur ; G. R. Fernandes, Auteur Année de publication : 2011 Article en page(s) : pp.610-624 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Damage  Anisotropy  Constitutive  models  Two-dimensional  analysis  Concrete  structures Résumé : In this paper, a damage constitutive model accounting for induced anisotropy and bimodular elastic response is applied to two-dimensional analysis of reinforced concrete structures. Initially, a constitutive model for the concrete is presented, where the material is assumed as an initial elastic isotropic medium presenting anisotropy and bimodular response (distinct elastic responses, whether tension or compression stress states, prevail) induced by damage. Two damage tensors govern the stiffness under prevailing tension or compression stress states. Criteria are then proposed to characterize the dominant states. Finally, the proposed model is used in plane analysis of reinforced concrete beams to show its potential for use and to discuss its limitations. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i9/p610_s1?isAuthorized=no [article] Anisotropic damage model for concrete [texte imprimé] / J. J. C. Pituba, Auteur ; G. R. Fernandes, Auteur . - 2011 . - pp.610-624. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 137 N° 9 (Septembre 2011) . - pp.610-624 Mots-clés : Damage  Anisotropy  Constitutive  models  Two-dimensional  analysis  Concrete  structures Résumé : In this paper, a damage constitutive model accounting for induced anisotropy and bimodular elastic response is applied to two-dimensional analysis of reinforced concrete structures. Initially, a constitutive model for the concrete is presented, where the material is assumed as an initial elastic isotropic medium presenting anisotropy and bimodular response (distinct elastic responses, whether tension or compression stress states, prevail) induced by damage. Two damage tensors govern the stiffness under prevailing tension or compression stress states. Criteria are then proposed to characterize the dominant states. Finally, the proposed model is used in plane analysis of reinforced concrete beams to show its potential for use and to discuss its limitations. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i9/p610_s1?isAuthorized=no