Nonlinear stability analysis for composite laminated shallow spherical shells in hydrothermal environment

ABSTRACT: Based on the first-order shearing deformation theory, considering hydrothermal effect, the nonlinear stability of laminated composite shallow spherical shells under uniform load is investigated. An analytic solution for rigidly clamped edges is obtained by using modified iteration method. The extremum buckling principle is employed to determine the critical buckling load. The influences of geometric parameters, temperature and humidity on buckling behavior are discussed as well.