Microscopic modelling of volume expansion and pressure dependence of plastic yielding in crystalline solids |
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| Authors: | M Brünig |
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| Institution: | Lehrstuhl für Baumechanik-Statik, Universit?t Dortmund, D-44221 Dortmund, Germany email: bruenig@busch.bauwesen.uni-dortmund.de, DE
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| Abstract: | Summary The present paper deals with a nonlinear finite element procedure for the macroscopic rate-independent analysis of micromechanics
of crystalline solids undergoing finite elastic-plastic deformations including plastic volume expanding effects. Particular
attention is focused on deviations from the Schmid law of the critical resolved shear stress to model different stress-deflection
behavior in uniaxial tension and compression tests. Numerical simulations of elastic-plastic boundary-value problems should
demonstrate the efficiency of the algorithm and discuss the influence of different model parameters on stress-carrying and
deformation behavior observed experimentally.
Accepted for publication 3 June 1997 |
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| Keywords: | : elasto-plasticity crystalline solids SD effect volume expansion FE algorithm numerical simulations |
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