Abstract
Advantages of a cantilever-type dynamic absorber are simple shape, ease of manufacture and low-cost. In many past studies, the cantilever-type dynamic absorber is composed of lumped mass and zero mass plate spring or rigid beam and elastic fixation. However, the later has extra rigid modes, and these modes may become a source of unnecessary vibration. In this paper, we considered how to design and apply the cantilever-type dynamic absorber that consists of rigid fixed distributed mass system in order to absorb vibration of a cylindrical structure. Especially, a stator of a rotating machine as an example of the cylindrical structure is excited by electromagnetic force. And its circular vibration modes often become a problem. We conducted fundamental impact testing by using simple circular ring and cantilever. The testing results showed that the cantilever-type dynamic absorber is available to reduce the vibration of a cylindrical structure.
