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Communication Dans Un Congrès Année : 2023

Suitability evaluation of pre-formed cruciform sample without thickness reduction for high strain values in the center of the specimen under different strains paths

Résumé

In this study, the Finite Element (FE) simulation of an initially pre-deformed DC-5 steel cruciform specimen has been carried out and compared to experimental results. A new geometry of the sample with local reinforcements and without thickness reduction allows distribution of plastic deformation and gets high strains in its gauge region. The simulation is divided into two steps. The first one introduces initial deformation to the sample arms. For the second step, the calculated strain field is introduced as an initial pre-strain field before the application of loading along the two perpendicular arms of the cruciform specimen during the in-plane biaxial tensile test. The described numerical study expands the knowledge of material plastic flow using a ductile damage criterion under different biaxial tensile strain paths. The numerical and experimental results are in good agreement for different strain paths, from uniaxial to equibiaxial strain states.
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Dates et versions

hal-04093031 , version 1 (16-05-2023)

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Grzegorz Mitukiewicz, Lionel Leotoing, Guan Wang, Dominique Guines, Jaroslaw Goszczak, et al.. Suitability evaluation of pre-formed cruciform sample without thickness reduction for high strain values in the center of the specimen under different strains paths. International ESAFORM Conference 2023, Apr 2023, Krakow, Poland. pp.1463-1470, ⟨10.21741/9781644902479-158⟩. ⟨hal-04093031⟩
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