The dynamic analysis of visioplasticity for the plane upsetting process by the flow-function elemental technique

The flow-function elemental technique combined with visioplasticity is developed to analyze dynamic metal forming processes. In this technique, thr minimization of the summation of the velocity differences between experimental and numerical points is evaluated with imposed constrained conditions, the plant upsetting process being used to illustrate the technique. Calculated velocity and stress fields are presented The results show that the shear stress along the friction boundary Increases rapidly, to reach sticking level almost at the end edge. and that the calculated normal pressure along the die surface has the same trend when compared with the values predicted using the slab method.