Abstract
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 time-consuming 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.
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