MODIFIED MEMBRANE FINITE-ELEMENT FORMULATION CONSIDERING BENDING EFFECTS IN SHEET-METAL FORMING ANALYSIS

Abstract

A modified membrane finite element formulation is derived to take the bending effect into account for sheet metal forming analysis. The algorithm developed is applied to a cylindrical and a square cup drawing problem to confirm its validity. The results show that the bending effect is appreciable in a class of deep drawing problems. It is also noted that the present algorithm enhances the convergence of a solution procedure and prevents numerical buckling.