Dynamic Analysis of a Debonding Piezoelectric Sensor Layer of a Smart Beam

Abstract

In this paper, a specic study of the dynamic analysis of a debonding piezoelectric sensor/actuator layer attached to a host beam in a smart structure using nite element method was carried out. The results were obtained by using the Euler-Bernoulli beam theory to derive the governing equations converted to systems of matrix equations by the Galerkin finite element method, and solved numerically by Maple 18 package. It was observed that increases in the bending stiffness and the density of the composite beam decreases the displacement of the transverse displacement of the piezoelectric sensor/actuator layer, while increases in the axial stiffness and density of the composite beam increases the flexural (axial) displacement of the piezoelectric sensor/actuator layer and thereby impacting the debonding length of the attached piezoelectric patch, with respect to time.