A mesoscopic model for a better understanding of the transition from diffuse damage to localized damage / The Dung Nguyen in European journal of environmental and civil engineering, Vol. 14 N° 6-7 (Juin 2010)  

Public ISBD [article]  inEuropean journal of environmental and civil engineering > Vol. 14 N° 6-7 (Juin 2010) . - pp. 751-776 Titre : A mesoscopic model for a better understanding of the transition from diffuse damage to localized damage Type de document : texte imprimé Auteurs : The Dung Nguyen, Auteur ; Claire Lawrence, Auteur ; Christian La Borderie, Auteur Année de publication : 2011 Article en page(s) : pp. 751-776 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Concrete Mesoscopic approach Diffuse damage Localized Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The aim of this paper is to present a modelling of mechanical behaviour of concrete on a mesoscopic scale. Concrete is considered as a bi-phasic material where the cement paste and the aggregates are described with their own mechanical characteristics. Firstly, the model is studied in two dimensions in order to optimize the geometrical model of the inner structure of concrete in terms of the meshing strategy and the smallest size of the aggregate to be taken into account. The model shows interesting results on the transition from diffuse to localized damage and is able to reproduce dilatancy in compression. Finally, results of the three-dimensional model are shown in tension. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] A mesoscopic model for a better understanding of the transition from diffuse damage to localized damage [texte imprimé] / The Dung Nguyen, Auteur ; Claire Lawrence, Auteur ; Christian La Borderie, Auteur . - 2011 . - pp. 751-776. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 6-7 (Juin 2010) . - pp. 751-776 Mots-clés : Concrete Mesoscopic approach Diffuse damage Localized Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The aim of this paper is to present a modelling of mechanical behaviour of concrete on a mesoscopic scale. Concrete is considered as a bi-phasic material where the cement paste and the aggregates are described with their own mechanical characteristics. Firstly, the model is studied in two dimensions in order to optimize the geometrical model of the inner structure of concrete in terms of the meshing strategy and the smallest size of the aggregate to be taken into account. The model shows interesting results on the transition from diffuse to localized damage and is able to reproduce dilatancy in compression. Finally, results of the three-dimensional model are shown in tension. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire