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Modélisation du comportement non-linéaire des poteaux en bois renforcés par la fibre de carbone

Published online by Cambridge University Press:  12 June 2013

Farid Bentayeb ,
Imane Tavakoli-Gheynani ,
Mohammed El Ganaoui ,
Anis Bouali  and
Mourad Khelifa
Farid Bentayeb
Affiliation:
Département de Génie Civil, Université Mouloud Mammeri de Tizi-Ouzou, Algérie
Imane Tavakoli-Gheynani
Affiliation:
Université de Lorraine, LERMAB, École Nationale Supérieure des Technologies et Industries du Bois ENSTIB, 27 rue Philippe Séguin, 88000 Epinal, France
Mohammed El Ganaoui
Affiliation:
Université de Lorraine, LERMAB, Institut Universitaire de Technologie de Longwy, 54400 Cosnes et Romain, France
Anis Bouali
Affiliation:
Université de Lorraine, LERMAB, École Nationale Supérieure des Technologies et Industries du Bois ENSTIB, 27 rue Philippe Séguin, 88000 Epinal, France
Mourad Khelifa*
Affiliation:
Université de Lorraine, LERMAB, École Nationale Supérieure des Technologies et Industries du Bois ENSTIB, 27 rue Philippe Séguin, 88000 Epinal, France
*
a Auteur pour correspondance : mourad.khelifa@enstib.uhp-nancy.fr
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Abstract

L’objectif principal de cet article est la mise au point d’une méthodologie numérique de prévision du comportement local d’un procédé de renforcement des poteaux en bois par la fibre de carbone. En particulier, on s’intéresse à l’étude du comportement élasto-plastique du matériau bois avec effet du renforcement. Une modélisation basée sur la thermodynamique des processus irréversibles avec variables d’état est utilisée pour traduire le couplage entre le comportement plastique à écrouissage isotrope et l’effet du renforcement. Les aspects théoriques et numériques de cette formulation sont décrits en détail. La résolution du problème d’équilibre global est assurée par un schéma Dynamique Explicite. La validation de la procédure de calcul implémentée dans ABAQUS/Explicit est faite sur la simulation d’un essai de compression des éprouvettes circulaires en bois renforcées par la fibre de carbone. Les résultats des simulations sont confrontés à ceux de l’expérience.

Keywords

Matériau boisCFRPrenforcementconfinementorthotropieélasticitéplasticitéMEFTimberCFRPreinforcementconfinementorthotropyelasticityplasticityFEM
Type
Research Article
Information
Mechanics & Industry , Volume 14 , Issue 3 , 2013 , pp. 219 - 225
Copyright
© AFM, EDP Sciences 2013

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