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On convergence properties of variational constitutive updates for elasto-visco-plasticity

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Brassart, Laurence Stainier, Laurent

This paper deals with J2 elasto-visco-plasticity and analyzes in details a variational formulation of associated constitutive updates. The variational formulation is briefly presented and compared with the traditional radial return algorithm. Differences are highlighted in the case of combined hardening and rate-dependency models. In that case, the variational formulation introduces an algorithmic parameter, which effect is analyzed on precision and convergence behavior. A practical rule is proposed for choosing an optimal value for this parameter

Document type Article de périodique (Journal article)
Access type Accès restreint
Publication date 2012
Language Anglais
Journal information "GAMM-Mitteilungen" - Vol. 35, no.1, p. 26-42 (2012)
Peer reviewed yes
issn 0936-7195
Publication status Publié
Affiliation UCL - SST/IMMC/MEMA - Applied mechanics and mathematics
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Bibliographic reference Brassart, Laurence ; Stainier, Laurent. On convergence properties of variational constitutive updates for elasto-visco-plasticity. In: GAMM-Mitteilungen, Vol. 35, no.1, p. 26-42 (2012)
Permanent URL http://hdl.handle.net/2078.1/135576