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The paper presents an approach for the formulation of general laminated shells based on a third order shear deformation theory.
These shells undergo finite (unlimited in size) rotations and large overall motions but with small strains. A singularity-free
parametrization of the rotation field is adopted. The constitutive equations, derived with respect to laminate curvilinear
coordinates, are applicable to shell elements with an arbitrary number of orthotropic layers and where the material principal
axes can vary from layer to layer. A careful consideration of the consistent linearization procedure pertinent to the proposed
parametrization of finite rotations leads to symmetric tangent stiffness matrices. The matrix formulation adopted here makes
it possible to implement the present formulation within the framework of the finite element method as a straightforward task. 相似文献
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