Large deflection analysis of laminated composite plates resting on nonlinear elastic foundations by the method of discrete singular convolution

This paper presents nonlinear static analysis of a rectangular laminated composite thick plate resting on nonlinear two-parameter elastic foundation with cubic nonlinearity. The plate formulation is based on first-order shear deformation theory (FSDT). The governing equation of motion for a rectangular laminated composite thick plate is derived by using the von Karman equation. The nonlinear static deflections of laminated plates on elastic foundation are investigated using the discrete singular convolution method. The effects of foundation and geometric parameters of plates on nonlinear deflections are investigated. The validity of the present method is demonstrated by comparing the present results with those available in the literature.

► Large deflection analysis of laminated composite plates are investigated. ► As foundation, nonlinear elastic models have been used firstly. ► The effects of three-parameter foundation are investigated in detail.