Effects of Environment, and Damping and Coupling Properties of Composite Laminates on Panel Flutter.
Final rept. 1 Mar 76-30 Nov 77,
MATERIALS SCIENCES CORP BLUE BELL PA
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The dynamic response of composite materials has been investigated with the objective of assessing the influence of the geometry and the material variables upon the vibrational frequencies and dispersion characteristics in composite laminates. These studies are an essential first step in assessing the response of a structure subjected to more complex transient and aerodynamic loads which are frequently experienced in aerospace structures. A direct and important consequence of aerodynamic loading on structures is flutter, which can be defined as the dynamic instability of an elastic body in an airstream. A form of oscillatory instability which differs from the more conventional lifting surface flutter is panel flutter, which is the interaction between the missile or aircraft surface skin panel motions and aerodynamic forces in the supersonic regime.
- Laminates and Composite Materials