Dynamic analysis of composite laminated plates

This thesis reports the finite element analysis of dynamic responses of laminated composite plates, which are subjected to delamination. Parametric input files are developed by using ANSYS software in order to determine the natural frequencies and associated mode shapes with the harmonic responses of the laminated composite plates. Effects of delamination width and location on the natural frequency of both clamped-free and clamped-pinned laminated composite plates and harmonic response of a clamped-free laminated composite plate, which have a circular strip delamination around a circular hole delamination, are investigated. Comparisons with the results in literature verify the validity of the present study. As a result, it is seen that the natural frequency decreases in the existence of the delamination and the decreasing level depends on the width and location of the delamination.