Suitability evaluation of pre-formed cruciform sample without thickness reduction for high strain values in the center of the specimen under different strains paths
MITUKIEWICZ Grzegorz, LEOTOING Lionel, WANG Guan, GUINES Dominique, GOSZCZAK Jarosław, BATORY Damiandownload PDF
Abstract. 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.
Cruciform Sample, Biaxial Tensile Test Simulation, Ductile Damage Criterion
Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: MITUKIEWICZ Grzegorz, LEOTOING Lionel, WANG Guan, GUINES Dominique, GOSZCZAK Jarosław, BATORY Damian, Suitability evaluation of pre-formed cruciform sample without thickness reduction for high strain values in the center of the specimen under different strains paths, Materials Research Proceedings, Vol. 28, pp 1463-1470, 2023
The article was published as article 158 of the book Material Forming
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