Vibration and Buckling Behaviour of Laminated Composite Plate

Free vibration and buckling responses of laminated composite plate in the framework of first order shear deformation theory is analysed. The model has been developed in ANSYS using ANSYS parametric design language code. The model has been developed in ANSYS using ANSYS parametric design language code. In this study two shell elements (SHELL181/SHELL281) have been chosen from the ANSYS element library to discretise and obtain the elemental equations. The governing differential eigenvalue equations have been solved using Block-Lanczos algorithm. The solution predicts fundamental natural frequencies and critical buckling load of laminated composite plate. To establish the correctness of the proposed model, a convergence study has been done and the results obtained by using the model are compared with the available published literature. Effect of different parameters such as the thickness ratios, the aspect ratios, the modular ratios and the boundary conditions on the free vibration and buckling behavior of laminated composite plate is discussed.