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

Autor
Armero, F.; Pérez-Foguet, A.
Tipus d'activitat
Article en revista
Revista
International journal for numerical methods in engineering
Data de publicació
2002-01
Volum
53
Número
2
Pàgina inicial
297
Pàgina final
329
DOI
https://doi.org/10.1002/nme.278 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/8253 Obrir en finestra nova
Resum
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...
Citació
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.
Paraules clau
Plasticity And Viscoplasticity, Return Mapping Algorithms, Closest-point Projection, Primal And Dual Variational Principles, Augmented Lagrangian
Grup de recerca
EScGD - Engineering Sciences and Global Development

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