Analysis of Moulding Characteristic of Drawbead of Cylindraceous Part in Stamping Forming

The FEM model of cylindracous part was set up. Using the professional software DYNAFORM and the method of numerical simulation,the forming limit diagram of the part was obtained.Under the condition of different Blank-Holder Force(BHF) and drawbead,the forming performance of cylindraceous part in the process of stamping forming was analyzed. The results show that the drawbead has the remarkable influence on the friction drag and deformation drag of sheet metal. The using of drawbead can control the local deformation condition effectively,enables the distortion of part to tend to the balance. Thus guarantees the part to be formed successfully.