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

Julien Réthoré (1) , Stéphane Roux (1) , François Hild (1)

1 LMT - Laboratoire de Mécanique et Technologie

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.

Mots clés: Rupture; Discontinuity; Photomechanics

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Julien Réthoré, Stéphane Roux, François Hild. From pictures to extended finite elements: extended digital image correlation (X-DIC). Comptes Rendus Mécanique, 2007, 335, pp.131-137. ⟨10.1016/j.crme.2007.02.003⟩. ⟨hal-00199381⟩