2-DIMENSIONAL SPLINE COLLOCATION METHOD FOR NONLINEAR-ANALYSIS OF LAMINATED PANELS

The application of the spline collocation method, using the cubic B-sp lines technique, was extended to solve two-dimensional problems, and e mployed to determine the pre- and postbuckling behavior of laminated p anels subjected to mechanical and heating induced loadings. Transverse shear deformation effects were included in the analysis. The accuracy of the method was validated and its efficiency and adequacy to solve problems, concerned with moderate and thin-wailed (which may experienc e ''shear-locking'') shell type structures under the above types of lo adings, were shown. Examples, demonstrating the capability of the meth od to satisfactorily provide the buckling loads and postbuckling branc hes of multilayered panels under axial, pressure and uniform heating t ype loadings, are presented.