Nonlinear flutter of composite plates with damage evolution
Abstract
The investigators present a study of dynamic and aeroelastic response of structures which evolve due to damage. Aeroelastic response is shown to be dependent upon the distribution and accumulation of damage. In turn, the damage is dependent upon the presence of the aerodynamic loads. Dynamic characteristics are unique to the coupled damage/aeroelastic system and are developed as part of the solution methodology. In this study, the damage is due to the natural progression of microcracking of the composite structure; yet, the control model presented is appropriate for distributed actuation systems. The stability boundary for aeroelastic flutter and divergence evolves due to damage. Control design based upon the min-max control theory is presented which addresses model uncertainties.
- Publication:
-
AIAA/ASME/ASCE/AHS/ASC 34th Structures, Structural Dynamics, and Materials Conference
- Pub Date:
- April 1993
- Bibcode:
- 1993ssdm.conf.....K
- Keywords:
-
- Aeroelasticity;
- Composite Structures;
- Control Systems Design;
- Damage Assessment;
- Flutter Analysis;
- Plate Theory;
- Active Control;
- Actuators;
- Game Theory;
- Linear Quadratic Regulator;
- Minimax Technique;
- Modal Response;
- Structural Mechanics