A variationally consistent approach for nonassociative thermoplasticity at finite strain
Document typeConference report
Rights accessOpen Access
The present paper deals with nonisothermal plasticity at finite strain. Both isotropic and kinematic hardening are included through a non-associative model of ArmstrongFrederick-type. The model proposed in the present contribution is based on the recent works [1, 2]. Within the papers [1, 2], a variationally consistent update was proposed. This update allows computing the state of a thermomechanical solid by minimizing a certain energy potential. The non-trivial extension of [1, 2] to non-associative evolution equations was realized through the introduction of an extended principle of maximum dissipation augmented by a suitable parameterization of evolution equations. The latter formulation was recently presented in  within the context of isothermal plasticity. Recently, these authors have extended this approach to non-isothermal plasticity . The predictive capabilities of this model are critically analyzed and demonstrated in the present contribution.
CitationCanadija, M.; Mosler, J. A variationally consistent approach for nonassociative thermoplasticity at finite strain. A: COMPLAS XI. "COMPLAS XI : proceedings of the XI International Conference on Computational Plasticity : fundamentals and applications". CIMNE, 2011, p. 354-359.
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder