Flutter suppression for sandwich panel using dynamic absorber

A novel scheme for panel flutter suppression was proposed. In the scheme the panel is designed as a sandwich panel incorporated with distributed beam-type dynamic absorbers acting as its core layer. The frequency of the dynamic absorber is designed according to the first natural mode of the sandwich panel, the installation positions are determined according to the first three natural modes which are typically involved in the coupling of flutter mode. The dynamic properties and flutter characteristics of the dynamic absorbing panel were calculated and compared with these of the sandwich panel without absorber or sandwich panel installed with rigid beam. The results demonstrate that the proposed beam-type dynamic vibration absorber scheme is very effective in flutter suppression for the sandwich panel.