Nonlinear Dynamic Analysis of Laminated Composite Plates Supported by Springs

In this study, nonlinear dynamic analysis of laminated composite plates supported by springs is investigated. Three different plate materials are selected for the analysis. Nonlinear free vibrations of laminated composite plates are studied in two different boundary conditions. These boundary conditions are free and simply supported. The classical finite element method is used for the analysis. Spring supports stiffness matrix and nonlinear stiffness matrix are developed specifically to analysis. A code of computer program with Matlab is prepared for the calculations. Effect of boundary conditions and material properties are investigated on nonlinear free vibrations of composite plate. The results are graphically presented and discussed.