Buckling Analysis of Laminar Composite Plates with Cutouts

Abstract

Laminated composite plates are made up of plates consisting of layers bonded together and made up of materials chemically different from each other but combined macroscopically. In structures, holes provided in laminated composite plate show reduction in strength, stiffness and inertia. The optimization and nonlinear behavior on the effect of various parameters on the buckling load of square and cylindrical laminated plates with and without cut-outs. Cutouts are necessary to serve the purpose of weight reduction, venting and attachments to other units for the cable to pass through are so on. The parameters considered are cut-out location, fiber orientation angle, length to thickness ratio, boundary condition and Young’s Modulus Ratio. The analyzed laminated plates are of carbon fiber reinforced composite materials. Laminated composite plate with circular cutout shows a decrease in buckling load than plates without cutout.