Free Vibration Analysis of Laminated Composite Plate using FSDT with Finite Element Approach

摘要

Free vibration theory of laminated composite plates using First-order Shear Deformation Theory (FSDT) is presented in this paper. The theoretical plate formulation is done using FSDT. A four-noded isoparametric quadrilateral element with 5 degrees of freedom at each node is considered. Finite element approach is employed for finding the shape functions. Hamilton's principle is used for deriving the equations of motion. The natural frequency of the laminated composite plate is computed using MATLAB programming. The natural frequency for different number of layers and a/h ratios is found out. The obtained values are compared with the values available in the literature.