Study on Vibration and Bifurcation of an Aeroengine Rotor System with Elastic Ring Squeeze Film Damper

To analyze the problem of vibration and bifurcation in rotor system aeroengine with elastic ring squeeze film damper (ERSFD) supports, theoretical equation dynamic is developed this paper, based on system, (ERSFD), three supports. The estimated analytical solution oil force solved using short bearing approximation theory semi-oil inference suspension inner outer boss contact. Considering stiffness damping rolling bearings, model established elastohydrodynamic lubrication (EHL) theory. By average method, modes are obtained concerning coefficient parameters. range optimization parameters can be appropriately improved to enhance characteristics device given different hole seepage, stiffness, position other structural