Studies on Vibration Control of Beams Supporting Machine : Case in Which Machine Is Worked Like Dynamic Absorber and Case in Which Dynamic Absorber Is Attached to Machine

Abstract

To suppress the resonance of a simply supported bean and a clamped-clamped beam supporting a machine, the case in which the machine-suspension system is worked like a dynamic absorber and in which a dynamic absorber is attached to the machine are discussed theoretically. The adjusting conditions of the springs and the dashpots to the first or second resonances of the beams are determined and the effects of vibration isolation are discussed. Roughly speaking, the former method is particularly effective with respect to the suppression of vibration of the beams and the latter method is particularly effective with respect to that of the machine.