Finite element investigation on parameters influencing the springback during sheet metal forming

Abstract

The article presents the results of finite element analysis of the parameters influencing the springback of a benchmark-type U-shaped detail after cold sheet metal forming process by using LS-DYNA software. The rela-tionships of the quantities characterizing the springback against the blankholder force, the die friction coefficient and the die gap are analyzed. The wall thinning of the de-tail has been investigated and the critical value of the blankholder force obtained.