An Add-On Suspension for Controlling the Vibrations of Shafts Accelerating to Supercritical Speeds

Abstract An add-on switching support is proposed to limit the transient vibrations of a flexible beam by continuously varying its displacement response. A finite element technique has been utilized to simulate the dynamic response of a flexible shaft operating at supercritical speeds. During acceleration, amplitude reductions of 66% are obtained with the actuation of the add-on support. Experimental verification is also described, achieving comparable amplitude reductions.