Introduction
Flutter is a dynamic aeroelastic phenomenon in which the aerodynamic loads on a flexible body couple with its natural modes of vibration to produce oscillatory motions with increasing amplitude. This may lead to catastrophic structural failure and hence structures exposed to aerodynamic loads must be carefully designed to avoid flutter.
This article is divided in two parts, the first one discusses the mathematical and physical aspects related to flutter and the methods implemented in OptiStruct, the second part reviews a test case setup and results that is used to validate the methods discussed in the previous section.
Link to the model presented in the article can be found in the Altair online help:
Flutter Analysis of an AGARD 445.6 Wing
A useful article of flutter analysis is also:
Flutter Tips & Tricks
