Active control of composite plates using piezoelectric stiffeners (Q1261689)

The governing equations for geometrically nonlinear, arbitrarily laminated rectangular plates reinforced by stiffeners which include piezoelectric and composite layers are presented. General equations are reduced to a single equation of motion of piezoelectrically reinforced, geometrically linear, specially orthotropic plates. A criterion for an effective control of forced vibrations of such plates using piezoelectric stiffeners and a static electric field is illustrated. Active control of dynamic stability using a dynamic electric field with a frequency equal to that of the in-plane load is also considered. In addition, an approach to the analysis of piezoelectrically stiffned nonlinear plates whose motion is represented by single-term functions of the coordinates is discussed.