Free flexural vibration behavior of bimodular material angle-ply laminated composite plates

In this paper, the free flexural vibration behavior of bimodular laminated angle-ply composite plates is studied. The formulation is based on the theory that accounts for the transverse shear and transverse normal deformations, and incorporates higher order through the thickness approximations of the in-plane and transverse displacements. The governing equations obtained using Lagrange's equations of motion are solved through the finite element approach. A detailed parametric study is carried out to study the influences of plate geometry, lay-up, ply-angle and material properties on the free flexural vibration response and frequencies, neutral surface locations and mode shapes of bimodulus angle-ply composite laminated plates.