Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts
The present paper proposes an experimental and numerical study of the blanking
process for sheet metal parts with thickness 0.2 mm. Firstly, an experimental blanking
apparatus is described. The measurement of the load-penetration curve for the punch is
achieved. Theses curves are analysed by comparison with the cut edge geometry. The
displacement field through the thickness is examined in situ using a CCD camera. The three
main phases of blanking are clearly observed, the elastic phase, the shear phase and the
fracture phase. The Secondly, the strategy adopted for the simulation is presented. The
numerical simulation of the blanking process is realised using the FEM code POLYFORM
developed in our laboratory.
Vincent LEMIALE, Philippe PICART, Sébastien MEUNIER
Reçu le 16 juillet 2001.
Blanking, Experiments, Damage, Fracture.