In this paper the infl uence of different boundary conditions on geometrically nonlinear response of laminated composite plates is analyzed. Mathematical model, based on layer-wise displacement fi eld of Reddy [1], is formulated using the von Karman, small strain large defl ection theory. The principle if virtual displacements (PVD) is used to obtain the weak form of the problem. The weak form is discretized utilizing isoparametric fi nite element approximation. The originally coded MAT-LAB

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... ram is used to investigate the infl uence of different boundary conditions on geometrically nonlinear response of laminate composite plates. The accuracy of the numerical model is verifi ed by comparison with the available results from the literature.