Internal Damping and Stability of Rotor-shaft Systems

Abstract

Observing a structural damping caused by the method of fitting the rotor into the rotating shaft, this paper has studied experimentally the structural damping, the estimated values of the internal damping and stabilities of many rotors. From these experimental results, it has been found that the fitting methods bear relations to the stabilities and one view has been obtained. And then, this paper has made clear theoretically and experimentally that the self-excited vibration of this kind can be prevented by supporting the rotating shaft flexibly.