Analiza bardzo dużych lgtęć sprężystych ściskanych osiowo powłok walcowych i stożkowych

The paper presents an analysis of the post-buckling behaviour of isotropic cylindrical and conical shells subject to axial compression. The starting point of the paper is the Lagrange variational principle, the application of which consists in assuming a kinematically admissible strain and displacement fields. The fields are determined by considering the geometry of quasi-isometric deformations of the shell after buckling. That enables us to solve the problem with no limitation on the magnitude of the displacements.