Calibration of material parameters of anisotropic yield criterion with conventional tests and biaxial test

Shunying Zhang (1) , Lionel Leotoing (1) , Dominique Guines (1) , Sandrine Thuillier (2)

1 LGCGM - Laboratoire de Génie Civil et Génie Mécanique
2 LIMATB - Laboratoire d'Ingénierie des Matériaux de Bretagne

Bron and Besson yield criterion has been used to investigate the plastic anisotropic behavior of an aluminum alloy AA5086. The parameters of this anisotropic yield model have been identified by two different methods: a classical one, considering several homogeneous conventional experiments and an exploratory one, with only biaxial test. In this paper, the parameter identification with conventional experiments has been carried out with uniaxial tensile tests and simple shear tests in different orientations to the rolling direction and with a hydraulic bulge test. For comparison's sake, Hill's 48 yield function has also been calibrated analytically from uniaxial tensile tests. Numerical simulation for the cross biaxial test has been carried out with the anisotropic parameters identified from the conventional tests. From this simulation, the principle strains along a specified path in the gauge area of the cruciform specimen have been evaluated. A good agreement is observed between experimental and numerical values of principal strains for a large range of strain paths.

Mots clés: Plastic anisotropy; Yield criterion; Biaxial test; Material parameter identification

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

Shunying Zhang, Lionel Leotoing, Dominique Guines, Sandrine Thuillier. Calibration of material parameters of anisotropic yield criterion with conventional tests and biaxial test. 16th annual ESAFORM Conference on Material Forming, Apr 2013, Aveiro, Portugal. pp.2111-2117, ⟨10.4028/www.scientific.net/KEM.554-557.2111⟩. ⟨hal-00872583⟩