Free vibration analysis of a skew angle- ply FRP composite plate with a circular cutout

Abstract

The present investigation deals with the free vibration analysis of a thick four-layered symmetric angle-ply skew laminated Fiber Reinforced Plastic (FRP) composite plate with a circular cutout and clamped boundary conditions. Three dimensional finite element model which uses the elasticity theory for the determination of stiffness matrices is modeled in ANSYS software to evaluate first five natural frequencies of the laminate. The effect of fiber angle on the natural frequencies of the plate is discussed.