INVESTIGATING THE EFFECTS OF THE FRICTION COEFFICIENT AND TOOL GEOMETRY ON THE CUP THICKNESS IN THE DEEP DRAWING PROCESS OF SPXI250 ALLOY

摘要

In this paper, effects of friction coefficient and tool geometry on the thickness variations of a cylindrical cup were studied. Blank is made of SPXI250 alloy sheet which was analyzed by Finite Element Method (FEM). This not been studied yet. Finite Element modeling of the deep drawing process was conducted using ABAQUS/EXPLICIT software. A set of appropriate die and punch were designed for experimental tests. The results of the simulation showed that a change in the friction coefficient of the die-blank interface leads to a significant changes in the cup thickness. Moreover, the results revealed that the influence of die nose radius on the final cup thickness variations is greater than that of the punch nose radius. The simulation results of this study were compared with the experimental results and those of the other investigators'. The comparisons of the experimental and simulation results with those of the other researchers were so satisfactory.