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Original Articles

Mixed mode fracture of a higher order beam model in gradient-dependent plasticity

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Pages 831-839 | Published online: 26 Apr 2012
 

Abstract

A higher-order shear-deformable beam model with gradient-dependent plasticity regularisation is presented in this work. The model takes into account a realistic non-linear variation of stresses and strains through the beam thickness. This enables mixed mode fracture analysis. Numerical results are presented for a multilayered beam. The discrete problem size is significantly reduced through this semi-local approach.

Un modèle de poutre avec gauchissement des sections, dans le cadre de la plasticité au gradient, est présenté. Il prend en compte une variation réaliste des contraintes et déformations de cisaillement sur la section. La confrontation avec les expériences montre l’aptitude de ce modèle multicouche à décrire le mode mixte de ruine, tout en réduisant considérablement la taille du problème discret.

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