THE SURFACE INTEGRAL TO THE AXISYMMETRIC ROD DRAWING THROUGH THE ELLIPTIC-DIE PROFILE

A kinematically admissible continuous velocity field is proposed to the rod drawing through the elliptic die profile.The surface integral is applied to the friction power.The twin shearing stress yield criterion and the integral as a function of the upper limit are used in the deformation powers.Then,an upper-bound analytical solution to the rod drawing through elliptic die profile is obtained.