Author(s)

M. Tervonen

Abstract

Steady state rolling contact of cylinders with viscoelastic layers M. Tervonen Department of Mechanical Engineering, University ABSTRACT The finite element method is used to solve the steady state rolling contact problem of two layered cylinders. The layer thicknesses, radii of the rolls and the relaxation spectra of the linearly viscoelastic materials can be arbitrary. The contact formulation presented here uses the numerical fundamental solution for a moving surface force. The full Newton-Raphson iteration is used when solving the spatial equilibrium equations. Test and convergence results show the validity of the method. Other, more practical, cases are also considered. INTRODUCTION Slightly filled engineering polymers are frequently used, for instance, as roll covers in paper industry. At normal operating temperature, these materials have an equilibrium extensional modulus in the order of 1 GPa and can withstand a maximum strain of about one to two percent. They have a g

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