From pictures to extended finite elements: extended digital image correlation (X-DIC)

Julien Réthoré; Stéphane Roux; François Hild

doi:10.1016/j.crme.2007.02.003

From pictures to extended finite elements: extended digital image correlation (X-DIC)

Presented by: Évariste Sanchez-Palencia

Julien Réthoré ¹; Stéphane Roux ²; François Hild ¹

¹ LMT-Cachan, ENS de Cachan – CNRS UMR 8535 – Université Paris 6, 61 avenue du Président Wilson, 94235 Cachan cedex, France
² Surface du verre et interfaces, UMR CNRS/Saint-Gobain, 39 Quai Lucien-Lefranc, 93303 Aubervilliers cedex, France

Comptes Rendus. Mécanique, Volume 335 (2007) no. 3, pp. 131-137.

Abstract
Résumé

An image correlation algorithm accounting for discontinuities is proposed. It is based on a decomposition of the displacement field onto a regular finite element basis supported by a uniform mesh, enriched with suitable functions to describe accurately discontinuities, paralleling recent developments of extended finite elements. This algorithm is applied to a bolted assembly where interface slip is observed upon loading.

Un algorithme de corrélation d'images numériques capable de rendre compte de discontinuités est introduit. Il est fondé sur une décomposition du champ de déplacement sur une base régulière de type éléments finis supportés par un maillage homogène, enrichie par des fonctions de base adaptées aux discontinuités, suivant les développements récents des éléments finis étendus. Cet algorithme est appliqué à l'étude d'un assemblage boulonné où un glissement est mobilisé sous charge.

Received: 2006-12-05
Accepted: 2007-02-06
Published online: 2007-03-01

DOI: 10.1016/j.crme.2007.02.003

Keywords: Rupture, Discontinuity, Photomechanics
Mots-clés : Rupture, Discontinuité, Photomécanique

Author's affiliations:

Julien Réthoré ¹; Stéphane Roux ²; François Hild ¹

¹ LMT-Cachan, ENS de Cachan – CNRS UMR 8535 – Université Paris 6, 61 avenue du Président Wilson, 94235 Cachan cedex, France
² Surface du verre et interfaces, UMR CNRS/Saint-Gobain, 39 Quai Lucien-Lefranc, 93303 Aubervilliers cedex, France

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     author = {Julien R\'ethor\'e and St\'ephane Roux and Fran\c{c}ois Hild},
     title = {From pictures to extended finite elements: extended digital image correlation {(X-DIC)}},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {131--137},
     publisher = {Elsevier},
     volume = {335},
     number = {3},
     year = {2007},
     doi = {10.1016/j.crme.2007.02.003},
     language = {en},
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Julien Réthoré; Stéphane Roux; François Hild. From pictures to extended finite elements: extended digital image correlation (X-DIC). Comptes Rendus. Mécanique, Volume 335 (2007) no. 3, pp. 131-137. doi : 10.1016/j.crme.2007.02.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2007.02.003/

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