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On the formulation of closest-point projection algorithms in elastoplasticity. PartI: the variational structure

Author
Armero, F.; Pérez-Foguet, A.
Type of activity
Journal article
Journal
International journal for numerical methods in engineering
Date of publication
2002-01
Volume
53
Number
2
First page
297
Last page
329
DOI
https://doi.org/10.1002/nme.278 Open in new window
Repository
http://hdl.handle.net/2117/8253 Open in new window
Abstract
We present in this paper the characterization of the variational structure behind the discrete equations defining the closest-point projection approximation in elastoplasticity. Rate-independent and viscoplastic formulations are considered in the infinitesimal and the finite deformation range, the later in the context of isotropic finite-strain multiplicative plasticity. Primal variational principles in terms of the stresses and stress-like hardening variables are presented first, followed by th...
Citation
Armero, F.; Pérez, A. On the formulation of closest-point projection algorithms in elastoplasticity. PartI: the variational structure. "International journal for numerical methods in engineering", Gener 2002, vol. 53, núm. 2, The definitive version is available at http://www3.interscience.wiley.com/journal/86513084/abstract, p. 297-329.
Keywords
Augmented Lagrangian, Closest-point projection, Plasticity and viscoplasticity, Primal and dual variational principles, Return mapping algorithms
Group of research
EScGD - Engineering Sciences and Global Development

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