Overview of identification methods of mechanical parameters based on full-field measurements

Stéphane Avril (1) , Marc Bonnet (2) , Anne Sophie Bretelle (3) , Michel Grediac (4) , François Hild (5) , Patrick Ienny (6) , Félix Latourte (7) , Didier Lemosse (8) , Stéphane Pagano (9) , Emmanuel Pagnacco (8) , Fabrice Pierron (1)

1 LMPF - Laboratoire de Mécanique et Procédés de Fabrication
2 LMS - Laboratoire de mécanique des solides
3 IMT - MINES ALES - IMT - MINES ALES
4 LAMI - Laboratoire de Mécanique et Ingénieries
5 LMT - Laboratoire de Mécanique et Technologie
6 C2MA - Centre des Matériaux des Mines d'Alès
7 LMGC - Laboratoire de Mécanique et Génie Civil
8 LMR - Laboratoire de mécanique de Rouen
9 M3 - Modélisation Mathématique en Mécanique

This article reviews recently developed methods for constitutive parameter identification based on kinematic full-field measurements, namely the finite element model updating method (FEMU), the constitutive equation gap method (CEGM), the virtual fields method (VFM), the equilibrium gap method (EGM) and the reciprocity gap method (RGM). Their formulation and underlying principles are presented and discussed. These identification techniques are then applied to full-field experimental data obtained on four different experiments, namely (i) a tensile test, (ii) the Brazilian test, (iii) a shear-flexural test, and (iv) a biaxial test. Test (iv) features a non-uniform damage field, and hence non-uniform equivalent elastic properties, while tests (i), (ii) and (iii) deal with the identification of uniform anisotropic elastic properties. Tests (ii), (iii) and (iv) involve non-uniform strain fields in the region of interest.

Keywords: Digital image correlation; Identification; Kinematic field measurements; Finite elements; Inverse problem

Domains: Solid mechanics [physics.class-ph]; Solid mechanics [physics.class-ph]; Materials

Stéphane Avril, Marc Bonnet, Anne Sophie Bretelle, Michel Grediac, François Hild, et al.. Overview of identification methods of mechanical parameters based on full-field measurements. Experimental Mechanics, 2008, 48 (4), pp.381-402. ⟨10.1007/s11340-008-9148-y⟩. ⟨hal-00274639v2⟩