A case study of the rolling contact of a calendar roll

Abstract

The rolling contact of a case study is discussed. A method for describing the contact of the two rolls of a calender unit is presented. Firstly, the rotor dynamics system of a roll is described by expressing the kinetic energy in a global non-rotating coordinate frame and the strain energy in a rotating frame by using a finite element (FE) mesh and then by deriving the rotor dynamical matrix equations accordingly. The contact of the two rolls is then defined as a line contact moving on the roll surfaces according to the rotation movements. A procedure for determining the movement on the surface of FE mesh is presented. The contact stiffness function between the rolls is described. The aim of this study is to create a cost effective simulation approach for numerical time domain analyses. An example simulation is illustrated.

Keywords

rotor dynamics finite element method rolling contact nip calender unit

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