A numerical simulation for deep drawing process

In this paper, a numerical simulation for analysis of the deep drawing process of axisymmetric products (Cup Drawing) is given. It is based on a combination of both Finite Element and Finite Difference Methods. The analysis of process is thus simplified and the computational time is reduced. Bending and unbending at the die profile, friction, shearing force and change in thickness are taken into account. The equilibrium equations of forces in the meridian and thickness directions including the effect of the contact force of the tool and the equilibrium of peripheral moment are satisfied in all parts of the material. A contact model has also been given to judge the contact stating of each element with tool. By using the simulation, the deformation features of the circular blank can be obtained. These include the geometrical shapes of blank at each deformation step, stress and strain distributions and change of thickness. Moreover, the results of analysis regarding peripheral strain are compared with the experimental results. Good agreements between the analysis and experimental results show the validity of the simulation.