Static and Dynamic Behavior of Elastic Structure Activated By Piezoelectric Actuators

The mechanical displacement and the electric potential fields of piezoelectric materials have drawn much attention in that the above coupling effects of these materials have found alication as sensors and actuators. In this investigation a simply suorted steel plate with bonded piezoelectric actuato, which is an example of smart structure, is studied for its static and dynamic characteristics. Electric tage is alied to the piezoelectric actuator resulting in bending effect of the plate. The effect of increasing tage on the piezoelectric actuator and the influence of adding more than one piezoelectric actuator are studied. Modal analysis gives the dynamic characteristics of the steel plate. The natural frequency and the mode shapes of the plate are dealt with, and the influence of the thickness of the piezoelectric actuator, the effect of the mechanical and electric load on the mode shapes and the frequencies are considered in the study. Finite element analysis in conjunction with the modelling code ANSYS is used for the study