DefinePK

Abstract

Introduction of draw beads can minimize the spring back. Spring back which in the elastic recovery occurs after the sheet metal forming process will result inaccurate geometry of the deformed parts. The objectives of this project are to study the influence of various geometries of the draw bead to the spring back for the mild steel sheet metal. To achieve the objectives, the computational investigation analysis by finite element method based simulation package will be employed to analyze the best draw bead geometry to reduce spring back on mild steel. Draw bead applied to control the material flow in a stamping process and improve the product quality by controlling the draw bead restraining force. A simulation approach by using ABAQUS software used to study the influence of adding draw beads geometry, whether it helps in minimizing the spring back. There are four types of draw beads geometry involve that investigated that is: (1) without draw beads, (2) circular draw beads, (3) rectangular draw beads and (4) triangular draw beads. The result shows that the triangular draw beads reduce spring back more compared to other geometry.