Abstract
The coupling effects between the mechanical and electric properties of piezoelectric materials have drawn significant attention for their potential applications as sensors and actuators. In this investigation, two piezoelectric actuators are symmetrically surface bonded on a cross-ply composite laminate. Electric voltages with the same amplitude and opposite sign are applied to the two symmetric piezoelectric actuators, resulting in the bending effect on the laminated plate. The bending moment is derived by using the classical laminate theory and piezoelectricity. The analytical solution of the flexural displacement of the simply supported composite plate subjected to the bending moment is solved by using the plate theory. The analytical solution is compared with the finite element solution to show the validation of present approach. The effects of the size and location of the piezoelectric actuators on the response of the composite laminate are presented through a parametric study. A simple model incorporating the classical laminate theory and plate theory is presented to predict the deformed shape of the simply supported laminate plate.
Highlights
Piezoelectric materials with the advantages of quick response, low power consumption and high linearity have drawn much attention in the past decade
Figure 10. deformation of the composite plate induced by the PZT actuator bonded on the top region calculated by (a) Equation (15) (b) finite element method. (a) deformed shape calculated by Equation (15). (b) deformed shape calculated by ANSYS
Piezoelectric materials are often used as strain actuators and shape control of smart structures, as they are compact and response quickly
Summary
Piezoelectric materials with the advantages of quick response, low power consumption and high linearity have drawn much attention in the past decade. Dimitriadis et al [5] used two dimensional patches of piezoelectric material bonded to the surface of a supported plate as vibration actuators to excite the selected modes. The present work investigated the load transfer between surface bonded piezoelectric actuators and the host structure. The effects of the size and location of the piezoelectric actuators on the response of the composite laminate are presented through a parametric study. The objective of this investigation is to develop an analytical expression of the response of a thin plate excited by the bonded piezoelectric actuators. The feasibility of controlling the deflected shape of the plate is illustrated by placing the actuators at various locations
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