Influence of Nonuniform Deformation on the Contact-Stress Distribution in Strip Rolling

Resumo

Abstract—Attention focuses on how frictional forces and the shape of the contact surface affect the stress distribution over the strip thickness in hot rolling. A differential equation for the contact stress is obtained, taking account of the nonuniform deformation. This equation is solved analytically for the slip zones, using the Amontons–Coulomb law, and also for the drag zones with constant frictional forces. The error when plane cross sections are assumed in determining the rolling force is assessed.