Dynamic characterization of laminated fiber composites using finite element method / Mohamad Asyraf Hj. Mohamed Hussin

This project has its own objective that is to determine the dynamic characteristics of laminated fiber composite namely Kenaf fiber in the terms of its natural frequencies and mode shapes by the aid of Finite Element Method. In previous, researcher has expanded three components of displacement by double Taylor series expansion in the plane of the plate. The coefficient of each term in the double Fourier series is taken as a function of the thickness coordinate only. These expansions are such that boundary conditions are exactly satisfied at the edges of the simply supported plate. By earning the eigenvalue and eigenvector, the required parameters then being obtained by the aid of Jacobi Iteration Method. (Based on Euler's method) In this project, 2 ply of Kenaf fiber plate 170x215mm with a thickness of 6mm is used. Each ply has a thickness of 3mm and being combined together. Five boundary conditions have being considered, free-free, free-end using 1- clamp, 2-clamps, 3-clamps, and 4-clamps. MSC/NASTRAN software is the main (FEM) analysis medium for the project. The results will be compared with other analysis methods. (EMA and RE)