Abstract

In this study, accurate numerical results are presented for the vibration frequencies of uniform uniaxially in-plane loaded simply supported, rectangular, angle-ply laminated plates. In-plane loads are chosen as certain ratios of the critical buckling loads of the plates investigated. The Ritz method, along with the displacement component assumed in the form of a double sine series, is applied in order to solve the vibration and buckling problems of angle–ply laminated plates, which can not be solved analytically. Convergence studies are presented to demonstrate the accuracies of the results and the effects of fiber orientation angle, side ratios and different materials on the frequencies of in-plane loaded composite plates are investigated.