A Preliminary Study on Flutter Suppression Concepts for Aeronautical Components

摘要

In this work both active and passive flutter suppression solutions for plates were studied. First, the feasibility of using cork agglomerates as a core in a sandwich structure with carbon facings to prevent and minimize the high amplitude oscillations of this aeroelastic phenomenon was evaluated. It was demonstrated that it is possible to increase the aircraft flight envelope using a lighter structure. Second, an active vibration suppression method using piezoelectric patches in an aluminium plate was studied with increases of about 20% in flutter speed being obtained. A further investigation was performed in order to choose the optimal piezoelectric patches placement on the surface of the metallic plate.