POSTBUCKLING OF RECTANGULAR PLATES UNDER UNIAXIAL COMPRESSION COMBINED WITH LATERAL PRESSURE

Based on the nonlinear large deflection equations of von Karman plates,thee ateralpressure is first converted into an initial deflection by Galerkin method,the postbucklingbehavior of simply supported rectangular plates under uniaxial compression combined withlateral pressure is then studied applying perturbation method by taking deflection asperturbation parameter.Two types of in-plane boundary conditions and the effects of initial geometricimperfection are also considered.It is found that the theoretical results are in goodaccordance with experiments.