Adaptive composites modelling and application in panel flutter and noise suppression

Abstract

Recent developments in adaptive composite structures with distributed multifunctional actuators and sensors have attracted significant attention in the research community due to their potential commercial benefits in a wide range of applications such as vibration suppression, shape control and noise attenuation.In the field of finite element modeling, very few composite shell elements with electromechanical properties have been reported in the literature. Also, the reported finite elements used to model aircraft components have not properly accounted for the effects of curvature, thus requiring refined meshes in order to capture accurately the physics of the problem. The model proposed in this investigation consists of a shell type adaptive composite finite element with electromechanical properties and with double curvature. Its application in aircraft flutter and internal noise suppression are investigated.