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Strain localization in multipotential elastoplasticity
Author(s) -
Aubry Denis,
Modaressi Arezou
Publication year - 1992
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620340121
Subject(s) - strain (injury) , finite element method , discontinuity (linguistics) , plasticity , anisotropy , bifurcation , shear (geology) , mathematical analysis , physics , geometry , coulomb , classical mechanics , mathematics , mechanics , materials science , nonlinear system , anatomy , composite material , optics , medicine , quantum mechanics , thermodynamics , electron
Conditions of strain localization in multipotential elastoplasticity are studied in this paper for a strain discontinuity mode. The formulation is specialized to the case of a general anisotropic Mohr‐Coulomb model, where plastic shear deformations are envisaged as the contribution of microstrains in several planes. Some finite element simulations with strain projection show the relationship between the predicted direction of localization and the post bifurcation modes.