Structural similitude for flutter of delaminated composite beam-plates

Abstract

The main objective of this study is to demonstrate the applicability of similitude theory in designing<br><br>scaled down models to predict the flutter pressure of delaminated composite beam-plate subjected to<br><br>supersonic airflow. The linear plate theory is used for structural modeling, and linear piston theory is<br><br>used for aerodynamic modeling. In this study, we consider only the procedure that is based on the direct<br><br>use of the governing equations. Distorted models with different fiber orientation, delamination size, and<br><br>axial position than those of prototype are studied. Results show that a set of scaling models can be found<br><br>which can predict the flutter pressure of delaminated beam-plate accurately.