Nonlinear stability of truncated shallow conical sandwich shell with variable thickness

The theory of nonlinear stability for a truncated shallow conical shell wit h variable thickness under the action of uniform pressure was presented. Th e fundamental equations and boundary conditions were derived by means of ca lculus of variations. An analytic solution for the critical buckling pressu re of the shell with a hyperbolically varying thickness is obtained by use of modified iteration method. The results of numerical calculations are pre sented in diagrams, which show the influence of geometrical and physical pa rameters on the buckling behavior.