PARAMETERS OPTIMIZATION OF SPRINGBACK IN SHEET METAL FORMING BY RESPONSE SURFACE METHOD

Abstract

This paper deals with the optimization of Sheet Metal Forming parameters in order to reduce defect of springback which occur at the end of process. We propose a specific methodology based on the coupling between the one-step Inverse Approach as a surrogate model for the rapid simulation of sheet forming process, and a Response Surface Method based on diffuse approximation. The response surfaces are built using Moving Least Squares approximations constructed within a moving region of interest. Application of the sheet metal forming process is used to demonstrate the robustness of the method. The final design is validated with Stampack® and Abaqus® commercial codes based respectively on Explicit Dynamic and Implicit Static Approaches.