SUMMARYTwo mixed-interpolated general shell finite elements for non-linear analysis-a 9-node element and a 16-node element-are presented. The elements are based on the Mixed Interpolation of Tensorial Components (MITC) approach in which the covariant strain component fields for the in-plane and shear actions are interpolated and tied to the also interpolated displacement field. Both the 9-node element, referred to as the MITC9 element, and the 16-node element, referred to as the MITC16 element, are tested numerically and found to have high predictive capabilities.
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