Title: A dynamic absorber and a side-branch resonator for vibration and noise control
Abstract:This paper presents two demonstrations. The first one deals with control of vibrations of a motor under unbalance excitation. A dynamic absorber is used to reduce vibrations of the motor. The resonanc...This paper presents two demonstrations. The first one deals with control of vibrations of a motor under unbalance excitation. A dynamic absorber is used to reduce vibrations of the motor. The resonance phenomenon and mode shapes in vibrating systems will be shown. The second system is a finite length duct with an acoustic source (speaker) at one end. A Helmholtz resonator as a side-branch device is used to reduce the noise radiating from the open-end of the duct. Audible effects due to acoustic resonances in the duct and side-branch resonator system will be presented.Read More