STABILITY ANALYSIS OF LAMINATED COMPOSITE SPHERICAL SHELL CAPS

Abstract

The paper presents the stability finite element analysis for the multilayer composite spherical caps according to the moderate rotation theory. The study employs ANS 9-node elements and total Lagrangian finite element form. The spherical cap is uniformly loaded and clamped around. The stability of spherical caps is analyzed by taking into account the thickness, number of layers, and arrangement of composite layers. The displacement control method (Riks-Wemper) is used to solve the nonlinear stability equation. The stability analysis results of the isotropic spherical cap are compared with the experiment results of other authors.