One way to increase the overall stiffness of a shell structure is design shells with variable thickness. The effect thickness change on stability flexible shallow panels has been little studied due complexity solving such non-linear problems. Geometrically nonlinear deformation, buckling and postbuckling behavior thin elastic linearly subjected uniform normal pressure investigated. axisymmetric...

Globally convergent homotopy methods are used to solve difficult nonlinear systems of equations by tracking the zero curve of a homotopy map. Homotopy curve tracking involves solving a sequence of linear systems, which often vary greatly in difficulty. In this research, a popular iterative solution tool, GMRES(k), is adapted to deal with the sequence of such systems. The proposed adaptive strat...