Numerical analysis of a hot-strip rolling problem with Coulomb-Siebel friction

An isothermal, steady-state, hot-strip rolling problem for rigid-plastic, s train rate sensitive and incompressible materials with coulombsiebel fricti on contact conditions is considered. The corresponding penalty variational statement is given and a convergent finite element - secant-modulus method is presented. Two-dimensional example problems are solved and comparisons w ith the available experimental and numerical results are made. The influenc e of the friction coefficient on the contact velocities, stresses and equiv alent strain rates is illustrated.