Numerical Investigation of Fine Blanking Process of Multilayer Sheets

Due to the increasing use of multilayer sheets in various industries, the study of widely used blanking operation on these sheets is necessary. In this paper a study on the process of fine blanking of a multilayer sheet of Al / Cu / Al is done. In order to get accurate numerical results, finite element simulations of multilayer plate are conducted by using Johnson–Cook model and ALE formulation in ABAQUS/ Explicit commercial finite element code. The results are in good agreement with experimental results. The results show that with increasing counter punch force the surface quality is improved and the shear force is increased. Microscopic examination of the lateral edges show that below the aluminum layer edge, relatively large amount of plastic deformation is observed.