Free Vibration Analysis of Laminated Plates

The present study aims at analyzing the free vibration behavior of hybrid fiber-reinforced laminated composites is a complex phenomenon that is influenced by a number of factors, including the type of fibers used, the volume fraction of the fibers, the stacking sequence of the plies, and the boundary conditions of the structure. This study investigates the free vibration behavior of hybrid fiber-reinforced laminated composites to obtain their nondimensional natural frequency. The materials used are a functionally graded ceramic/metal mixture (FGM) composite and a carbon nanotube reinforced composite (CNTRC) with a volume fraction of 0.11. The analysis is performed using the finite element method for a simply supported plate with a thickness of 0.1, consisting of n plies with NL sublayers each. A linear distribution (UD) is used for the CNT case, with a low power index (Pin) of zero. To validate the accuracy and reliability of the proposed models, the results of the nondimensional natural frequencies and mode shapes obtained in this study are compared to those of existing models in the literature using COMSOL software with different meshing sizes.