On the Quasi-Static Perforation Resistance of Circular AA5083-H116 Aluminium Plates

This paper presents numerical simulations of quasi-static perforation of circular AA5083-H116 aluminium plates. The perforation process was analysed with 2D-axisymmetric elements, brick elements and shell elements. Slightly modified versions of the Johnson-Cook constitutive relation and fracture criterion were used in the finite element simulations to model the material behaviour. A factorial design was used to investigate the influence of varying plate thickness, boundary conditions, punch diameter and nose shape. Comparisons between LS-DYNA simulations and experiments were made and good qualitative agreement was in general found. However, some quantitative differences were observed.