Стенд для исследования динамических характеристик демпферов при гармоническом возбуждении

Abstract

Squeeze film dampers (SFDs) are widely used in turbomachinery rotor supports to reduce vibration amplitudes, serving as a connecting element between the rotor and the housing. The structural simplicity of such dampers, including the studied model with an elastic ring, makes them promising for application in aircraft gas turbine engines (GTEs). The damper’s elastic element consists of a thin-walled ring with smooth bulges located on the inner and outer surfaces: the inner bulges are offset relative to the outer ones, creating conditions for combined energy dissipation—both through hydrodynamic forces and dry friction in the contact zones.