A CONSISTENT COROTATIONAL FORMULATION FOR SHELLS USING THE CONSTANT STRESS CONSTANT MOMENT TRIANGLE

The simplest facet-shell formulation involves the combination of the constant-strain membrane triangle with a constant-curvature bending triangle. The paper describes a technique whereby this facet-formulation is extended to handle geometric non-linearity by means of a co-rotational procedure. Emphasis is placed on the derivation of a technique that is increment-independent with both the internal force vector and tangent stiffness matrix being derived from the 'total strain measures' in a 'consistent manner'. Numerical examples are resented which demonstrate an excellent numerical performance.