Dynamic and Vibration Analysis of Composite Cylindrical Shell with Piezoelectric Layers

In this paper, the dynamics and vibration analysis of cylindrical shells made of graphite epoxy layers with two piezoelectric layers at both internal and external surfaces are investigated. . Extraction of motion equations is based on sanders theory for thin shells. Equations of motion, obtained by partial derivatives, are solved by fourth order Runge Kutta method. First, we examine a number of geometric parameters of the problem, including shell thickness, radius and length of the shell, and the angle of the fiber in the change of the fundamental frequencies. Finally, the effect of piezoelectric parameters on the vibrational and dynamic response of cylindrical shells has been investigated. In all cases investigated, with increasing L / R ratio, the effect of piezoelectric coefficients has increased. The influence of other piezoelectric parameters has also been evaluated in relation to this parameter in a frequency response is negligible.