The Squeeze Film Damper over four decades of investigations. Part II: Rotordynamic analyses with rigid and flexible rotors

The present paper is aimed at summarizing the main results of the investigation regarding the application of the Squeeze Film Damper (SFD). Part I of the paper illustrated the constructive aspects and the operating features of this component, with reference to the related published work. Herein is a brief review of a number of theoretical and experimental analyses, regarding the dynamic behavior of rigid and flexible rotors supported with SFDs, with parallel examination of the main models adopted for the study. Advantages and drawbacks of SFDs are thus directly inferred from rotordynamic evaluation. Recent and current investigation, with particular regard to unconventional, improved SFDs, is briefly outlined in the concluding section of the paper.