Active Vibration Suppression of Stiffened Composite Panels with Piezoelectric Materials under Blast Loads

Abstract

Transient responses of stiffened panels with piezoelectric sensors and actuators are studied under normal blast loads. The air vehicles could be exposed to blast pulses generated by an explosion or shock-wave disturbances. Thus, active vibration suppression of the vehicles is important under blast loadings. The structural model is designed as a laminated composite panel with lead zirconate titanate (PZT) piezoceramic layers embedded on both top and bottom surfaces. A uniformly distributed blast load is assumed over the whole of the panel surface. The first-order shear deformation theory of plate is adopted, and the extended Hamilton’s principle is applied to derive the equations of motions. The numerical model is verified by the comparison with previous data. Using linear quadratic regulator (LQR) control algorithm, vibration characteristics and dynamic responses are compared. As piezoelectric patches are attached on the whole of the surface, the effect of the stiffener’s location is studied. Furthermore, the influences of the patch’s positions are also investigated through subjection to the blast wave. From various results, in order to get the best control performances, the research aims to find the optimum position of sensor and actuator pairs that is most effective under blast load environments.

Active Flutter Suppression of Smart-Skin Antenna Structures with Piezoelectric Sensors and Actuators

“…Lam et al [13] studied the vibration control of a composite plate with distributed piezoelectric sensors and actuators. Lee et al [14] presented active vibration suppression of stiffened composite panels using piezoelectric sensors and actuators. Liu et al [15] investigated the dynamic response of laminated composite plates with piezoelectric materials subjected to mechanical and electrical loadings.…”