期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 189, 期 1, 页码 313-339出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0045-7825(99)00298-4
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In the present work a complementary energy formulation for the solution of the static equilibrium problem of no-tension solids is presented. The main feature of the work is systematic use of the augmented Lagrangian approach for the regularisation of the nonsmooth acid nondifferentiable anelastic deformation potential. The proposed formulation is applied to derive a finite element formulation using the subspace of the self-equilibrated stresses as primal variables. The code implements the augmented Lagrangian algorithm for the determination of the inelastic deformations. Some numerical examples are included to illustrate the performance of the proposed approach. (C) 2000 Published by Elsevier Science S.A. All rights reserved.
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