Predict the Plastic Deformation of Perforated Sheet Metals using Image-based Finite Element Modeling

Abstract

Abstract In this work, numerical prediction of the plastic deformation behaviors of perforated sheet metals, specifically AISI 1018 low carbon steel, C260 Cu-Zn brass, under uniaxial tension was carried out. An image-based mesh generation technique was applied to better represent and discretize the perforated geometry of sheet metal specimens. Digital image correlation measured displacement boundary conditions were also implemented into the finite element modeling. The predicted results of perforated sheet metal under tension as nominal stress-strain curves and localized plastic strain distribution agree well with the experimental observations. Possible error sources and uncertainty of this image-based finite element modeling were also discussed.