Abstract
In deep drawing, a high blank holder force (BHF) and fast processing motion(SPD) will cause tearing, and a low BHF will cause wrinkle. The Variable Blank Holder Force (VBHF) approach is attractive approach in the industries, but there are few studies on the processing motion. In this paper, we perform simultaneous optimal design of the VBHF and SPD using sequential approximate optimization (SAO). The objective is taken as the minimization of the deviation of whole thickness. The constraints are taken as the tearing and wrinkling, they quantitatively defined with the Forming Limit Diagram (FLD). The design variables are the blank holder force, velocities and strokes. The Radial Basis Function (RBF) network is employed for the response surface. Through our numerical simulation, we verified the validity of the trajectory.
