Nonlinear buckling responses of radially pressured FG-GPLRC toroidal shell segments

An analytical approach for nonlinear buckling of functionally graded graphene platelet reinforced composite toroidal shell segments is presented in this paper. The Ritz energy procedure is executed, and radial pressure–deflection expression is constituted to obtain the postbuckling strength and critical buckling pressure of the shells. Significant influences on the buckling responses of shells with three different material distribution rules and mass fractions of graphene platelet, and geometrical dimensions are exemplified and in numerical examples.