Identification of heterogeneous elastoplastic behaviors using DIC measurements

Tarik Madani (1, 2, 3, 4) , Yann Monerie (1, 3, 4) , Stéphane Pagano (1, 5, 4) , Céline Pelissou (2, 4) , Bertrand Wattrisse (1, 3, 4)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 IRSN - Institut de Radioprotection et de Sûreté Nucléaire
3 ThM2 - ThermoMécanique des Matériaux
4 MIST - Laboratoire de micromécanique et intégrité des structures
5 M3 - Mathématiques et Modélisations en Mécanique

The use of full-field measurements in the identification of material properties is currently widespread thanks to advances in measurements techniques and computer-assisted identification methods. In this paper, an iterative procedure is used to identify the local stress fields and the material properties distributions using full-field measurement techniques. After summarizing the principle of the method, we focus on its validation in which we identify an elastoplastic behavior. Then the method was applied on noisy measured displacement fields to assess its robustness.

Domains: Mechanical engineering [physics.class-ph]; Mechanics of materials [physics.class-ph]; Materials and structures in mechanics [physics.class-ph]; Optics / Photonic; Signal and Image processing; Mechanics [physics.med-ph]

Tarik Madani, Yann Monerie, Stéphane Pagano, Céline Pelissou, Bertrand Wattrisse. Identification of heterogeneous elastoplastic behaviors using DIC measurements. Photomechanics 2015 , May 2015, Delft, Netherlands. ⟨hal-01273985⟩