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Détail de l'auteur
Auteur Antonis Zervos
Documents disponibles écrits par cet auteur
Affiner la rechercheComputational post failure analysis with a second gradient theory / Antonis Zervos in European journal of environmental and civil engineering, Vol. 14 N° 8-9 (Septembre 2010)
[article]
in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1067-1079
Titre : Computational post failure analysis with a second gradient theory : Gradient elastoplasticity Type de document : texte imprimé Auteurs : Antonis Zervos, Auteur ; Panos Papanastasiou, Auteur Année de publication : 2011 Article en page(s) : pp. 1067-1079 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Gradient plasticity Gradient elastoplasticity Post-bifurcation modelling Finite elements Numerical modelling Microstructure Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This article presents a theory of Gradient Elastoplasticity for strain-softening materials, in which internal length scales are present in both the elastic and the elastoplastic regime. A numerical discretisation based on the displacement formulation and a C1 finite element is used. It is shown that the formulation enables robust modelling of the post-peak material behaviour leading to localisation of deformation, spontaneously tracking emergent instabilities and quantitatively capturing details of the final localised failure mechanism. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Computational post failure analysis with a second gradient theory : Gradient elastoplasticity [texte imprimé] / Antonis Zervos, Auteur ; Panos Papanastasiou, Auteur . - 2011 . - pp. 1067-1079.
Génie Civil
Langues : Anglais (eng)
in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1067-1079
Mots-clés : Gradient plasticity Gradient elastoplasticity Post-bifurcation modelling Finite elements Numerical modelling Microstructure Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This article presents a theory of Gradient Elastoplasticity for strain-softening materials, in which internal length scales are present in both the elastic and the elastoplastic regime. A numerical discretisation based on the displacement formulation and a C1 finite element is used. It is shown that the formulation enables robust modelling of the post-peak material behaviour leading to localisation of deformation, spontaneously tracking emergent instabilities and quantitatively capturing details of the final localised failure mechanism. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp Continua with microstructure / Stefanos-Aldo Papanicolopulos in European journal of environmental and civil engineering, Vol. 14 N° 8-9 (Septembre 2010)
[article]
in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1031-1050
Titre : Continua with microstructure : Second-gradient theory: Theory, examples and computational issues Type de document : texte imprimé Auteurs : Stefanos-Aldo Papanicolopulos, Auteur ; Antonis Zervos, Auteur Année de publication : 2011 Article en page(s) : pp. 1031-1050 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Second-gradient theories Gradient elasticity Microstructure Finite elements Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Second-gradient theories represent a frequently used subset of theories of continua with microstructure. This paper presents an extended overview of second-gradient theories, starting from a simple one-dimensional example, proceeding with a thorough description of gradient elasticity and additionally briefly describing some other theories of this kind. A series of characteristic examples is presented to demonstrate the main aspects and applications of second-gradient theories. Finally, the complications in the finite-element implementation of second-gradient theories are presented, along with a review of the finite elements that have been developed for this purpose. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Continua with microstructure : Second-gradient theory: Theory, examples and computational issues [texte imprimé] / Stefanos-Aldo Papanicolopulos, Auteur ; Antonis Zervos, Auteur . - 2011 . - pp. 1031-1050.
Génie Civil
Langues : Anglais (eng)
in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1031-1050
Mots-clés : Second-gradient theories Gradient elasticity Microstructure Finite elements Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Second-gradient theories represent a frequently used subset of theories of continua with microstructure. This paper presents an extended overview of second-gradient theories, starting from a simple one-dimensional example, proceeding with a thorough description of gradient elasticity and additionally briefly describing some other theories of this kind. A series of characteristic examples is presented to demonstrate the main aspects and applications of second-gradient theories. Finally, the complications in the finite-element implementation of second-gradient theories are presented, along with a review of the finite elements that have been developed for this purpose. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp