WIT Press

Augmented Lagrangian Variational Formulation For A Plastic-hardening-damage Coupled Model

Price

Free (open access)

Paper DOI

10.2495/FR980101

Volume

19

Pages

14

Published

1998

Size

904 kb

Author(s)

M. Cuomo & L. Contrafatto

Abstract

A model for elastic-plastic hardening materials with coupled damage based on internal variables is described. Each kinematic variable is partitioned in the sum of a reversible and an irreversible part. The first enters as argument of the free energy, the other enters as argument of a dissipation functional D. that generates a generalised elastic domain K for the thermodynamic variables as the level set at 1 of the dissipation function. Following a general procedure for multivocal potentials, a family of variational principles can be obtained, whose stationary points represent the solution of the structural problem. 1. Aims and Limitations of the work It is presented a new phenomenological model for a class of elastic- plastic-damaging materials, based o

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