Abstract
An efficient higher-order shell theory is obtained for symmetric laminated composites. The in-plane displacement fields are obtained by superimposing a globally cubic varying displacement field on a zig-zag linearly varying one. For an orthogonal curvilinear coordinate system, equilibrium equations and boundary conditions are derived using lines of curvature coordinates. Cylindrical shell equations are obtained from the general equilibrium equations. To evaluate the present shell modeling, the analytical solution for a cylindrical bending problem is obtained. The present shell theory gives deformation and stresses which are in good agreement with those of exact elasticity solutions.
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