The Optimal Design of A Rotor System Supported by Squeeze Oil Film Damper

Squeeze film damper(SFD) is damping devices which has been widely used in rotating machines. SFD can effectively suppress rotor vibration and reduce transmitted forces. However, it would cause complex motions of the rotor system under specific operating conditions. The influence of clearance of the SFD on dynamics behavior of the rotor-squeeze film damper system, such as critical speed, mode shape, vibration response has been developed in this paper. The Newton method was employed to optimize the vibration response. The results of optimization reduced the vibration amplitude of acceleration by 84
^%
, and reduced the vibration amplitude of displacement by 86%. The contents and methods of this paper can provide guidance for the vibration optimization of rotor-squeeze film damper system.