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Article Dans Une Revue International Journal of Mechanical Sciences Année : 2015

Identification of sheet metal hardening for large strains with an in-plane biaxial tensile test and a dedicated cross specimen

Résumé

In this work, an in-plane biaxial tensile test of cruciform specimen is performed to identify the hardening behaviour of metallic sheets under large strains. Firstly, an optimal shape of the specimen is suggested. Then, a biaxial tensile test is carried out for an aluminium alloy AA5086. Experimental forces on the two axes of the specimen are measured during the test and strains in the central area of the specimen are post-treated by means of Digital Image Correlation (DIC) technique. Finally, by considering different yield criteria, the associated hardening laws are identified thanks to an inverse procedure based on a Finite Element (FE) modeling of the biaxial tensile test and on the experimental data mentioned above. The identified biaxial flow curves are then compared with the ones from the classical uniaxial tensile test.
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Dates et versions

hal-01203625 , version 1 (23-09-2015)

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Wei Liu, Dominique Guines, Lionel Leotoing, Eric Ragneau. Identification of sheet metal hardening for large strains with an in-plane biaxial tensile test and a dedicated cross specimen. International Journal of Mechanical Sciences, 2015, 101-102, pp.387-398. ⟨10.1016/j.ijmecsci.2015.08.022⟩. ⟨hal-01203625⟩
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