Perturbation solution for finite squeeze-film dampers executing linear motion

摘要

This paper presents a complete perturbation solution in the eccentricity ratio for Reynolds' equation, for finite squeeze-film dampers executing linear motion. Orders of the perturbed solution are presented for the pressure and velocity fields. This represents a closed-form solution for finite squeeze-film dampers that can be used for rotordynamic simulation applications, to replace timeconsuming finite-difference solutions. The perturbation solution provided in this paper can be extended for various damper sealing configurations, using appropriate boundary conditions, and provides insight into the damper characteristics.