An efficient numerical modelling of anisotropic structural behaviour in large strain elastoplasticity (CROSBI ID 506266)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Karšaj, Igor ; Sansour, Carlo ; Sorić, Jurica
engleski
An efficient numerical modelling of anisotropic structural behaviour in large strain elastoplasticity
The paper deals with aspects of anisotropic elastoplastic analysis at finite strain. The material model is based on the multiplicative decomposition of the deformation gradient. An anisotropic elastic constitutive law, described in invariant setting by the use of structural tensors, is presented. An anisotropic Hill-type yield criterion, described by an Eshelby-like stress tensor and further structural tensors, is developed. It considers nonlinear isotropic hardening as well. Explicit results for the specific case of orthotropic anisotropy are given. An accurate and trivial wise objective integration algorithm employing the exponential map is given. The numerical example demonstrates the influence of anisotropy on the elastoplastic deformation process as well as the robustness and accuracy of the proposed formulation.
elastic orthotropy; orthotropic yield function; multiplicative inelasticity; finite strain
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Podaci o prilogu
2005.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the Third MIT Conference on Computational Fluid and Solid Mechanics, CD-ROM edition
Bathe, K.J.
Cambridge (MA): Elsevier
Podaci o skupu
Third M.I.T. Conference on Computational Fluid and Solid Mechanics
predavanje
14.06.2005-17.06.2005
Cambridge (MA), Sjedinjene Američke Države