Eulerian structure of generalized plasticity / Vassilis P. Panoskaltsis in Journal of engineering mechanics, Vol. 134 N°5 (Mai 2008)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 134 N°5 (Mai 2008) . - pp. 354-361 Titre : Eulerian structure of generalized plasticity : Theoretical and computational aspects Type de document : texte imprimé Auteurs : Vassilis P. Panoskaltsis, Auteur ; Lazaros C. Polymenakos, Auteur ; Dimitris Soldatos, Auteur Année de publication : 2008 Article en page(s) : pp. 354-361 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Elastoplasticity Deformation Plasticity Computation Algorithms Résumé : In this work a new Eulerian approach to large deformation generalized plasticity, within the context of affine tensor analysis in Euclidean spaces, is presented. The approach relies crucially on the systematic use of the Lie derivative concept. Classical plasticity is then derived, as a special case of generalized plasticity. The computational implications resulting from the absence of the requirement for the existence of a yield surface in the theory of generalized plasticity are discussed. On the basis of those implications a general integration scheme is proposed. As an application, a generalized plasticity model in large deformations is presented. The proposed model is then used for the solution of boundary value problems. ISSN : 0733-9399 En ligne : http://cedb.asce.org/cgi/WWWdisplay.cgi?163828 [article] Eulerian structure of generalized plasticity : Theoretical and computational aspects [texte imprimé] / Vassilis P. Panoskaltsis, Auteur ; Lazaros C. Polymenakos, Auteur ; Dimitris Soldatos, Auteur . - 2008 . - pp. 354-361. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 134 N°5 (Mai 2008) . - pp. 354-361 Mots-clés : Elastoplasticity Deformation Plasticity Computation Algorithms Résumé : In this work a new Eulerian approach to large deformation generalized plasticity, within the context of affine tensor analysis in Euclidean spaces, is presented. The approach relies crucially on the systematic use of the Lie derivative concept. Classical plasticity is then derived, as a special case of generalized plasticity. The computational implications resulting from the absence of the requirement for the existence of a yield surface in the theory of generalized plasticity are discussed. On the basis of those implications a general integration scheme is proposed. As an application, a generalized plasticity model in large deformations is presented. The proposed model is then used for the solution of boundary value problems. ISSN : 0733-9399 En ligne : http://cedb.asce.org/cgi/WWWdisplay.cgi?163828

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