Abstract
In blanking a circular hole under impulsive pressure, computational simulation by using finite-difference scheme was attempted to examine the edge shape and its results were compared with the experimental results. Three kinds of metal plats 1mm in thickness, aluminium, copper and SUS304 , were employed in the experiments. The experimental results showed that the edge shape differed sharply with different mechanical properties of specimens. The edge shape based on the numerically simulated results showed about the same tendency as the experimental results. So, the effects of each parameter of the mechanical properties were discussed by the numerical simulations
