Issue |
ESAIM: ProcS
Volume 54, June 2016
Gradient flows: from theory to application
|
|
---|---|---|
Page(s) | 54 - 69 | |
DOI | https://doi.org/10.1051/proc/201654054 | |
Published online | 02 August 2016 |
A rate-independent gradient system in damage coupled with plasticity via structured strains*
1
Dipartimento di Matematica, Università degli Studi di Milano, Via Saldini 50, I-20133 Milano, Italy
2
Dipartimento di Matematica, Università degli Studi di Pavia, Via Ferrata 1, I-27100, Pavia, Italy
3
DIMI, Università di Brescia, Via Branze 38, I-25100 Brescia, Italy
4
Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstr. 39, D-10117 Berlin, Germany
a E-mail: elena.bonetti@unimi.it
b E-mail: elisabetta.rocca@unipv.it
c E-mail: riccarda.rossi@unibs.it
d E-mail: marita.thomas@wias-berlin.de
This contribution deals with a class of models combining isotropic damage with plasticity. It has been inspired by a work by Freddi and Royer-Carfagni [FRC10], including the case where the inelastic part of the strain only evolves in regions where the material is damaged. The evolution both of the damage and of the plastic variable is assumed to be rate-independent. Existence of solutions is established in the abstract energetic framework elaborated by Mielke and coworkers (cf., e.g., [Mie05, Mie11b]).
Résumé
Ce papier regarde l'étude d'une classe de modèles combinant l'endommagement isotrope avec la plasticité. Ce travail a été inspiré par des résultats de Freddi et Royer Carfagni [FRC10], qui ont considéré le cas où la partie non élastique du tenseur de déformation évolue seulement dans les zones endommagées du matériel. L'évolution de l'endommagement et de la plasticité est rate-independent. On preuve l'existence d'une solution dans le cadre des solutions énergétiques introduisées par Mielke et collaborateurs (cf., p. ex. [Mie05, Mie11b]).
Mathematics Subject Classification: 74C05 / 74E10 / 74R05 / 74R20 / 49S05 / 49J40 / 35K86
Key words: rate-independent systems / tensorial damage model / anisotropic damage / plasticity / structured strain / energetic solutions / existence results
The work of Elisabetta Rocca was supported by the FP7-IDEAS-ERC-StG Grant #256872 (EntroPhase), by GNAMPA (Gruppo Nazionale per l'Analisi Matematica, la Probabilità e le loro Applicazioni) of INdAM (Istituto Nazionale di Alta Matematica). Elena Bonetti and Riccarda Rossi were partially supported by a MIUR-PRIN'10-'11 grant for the project “Calculus of Variations”, and by GNAMPA (Gruppo Nazionale per l'Analisi Matematica, la Probabilità e le loro Applicazioni) of INdAM (Istituto Nazionale di Alta Matematica), and by IMATI – C.N.R. Pavia. Marita Thomas was partially supported by the German Research Foundation (DFG) within CRC 1114, project C05.
© EDP Sciences, SMAI 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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