Parametric Investigation Of Free Vibration Of Double Lap Composite Joints

This paper deals with a modal parametric study for fixed-free double-lap adhesively bonded laminated plates using a mathematical model based on the Hamilton's principle and solved numerically using the finite element discretization method programmed on MATLAB. Validation was carried out through ANSYS Workench.The following parameters were examined: adherents fibers' fraction volume, adhesive's thickness, overlap length, adherents' thicknesses and adhesive Young's Modulus. The results have shown fibers fraction volume and thicknesses as well as overlap length affect remarkably the natural frequencies of free vibration while adhesive thickness was found to have no effect. Finally, in the low margin of adhesive's Young's moduli, the natural frequencies were found to increase remarkably with the adhesive Young's modulus, while for higher Young's moduli the natural frequencies increase very slightly.