A reduced integration solid‐shell finite element based on the EAS and the ANS concept—Geometrically linear problems

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An efficient mixed variational reduced‐order model formulation for nonlinear analyses of elastic shells (2018, methodology): “In order to eliminate shear and trapezoidal locking, we redefine the transverse shear strain components Ēηζ , Ēξζ and the transverse normal strain component Ēζζ , respectively, by the Assumed Natural Strain (ANS) technique [29, 30] with number and location of the sampling points as reported in [17].”
Advantages of the mixed format in geometrically nonlinear analysis of beams and shells using solid finite elements (2017, methodology): “efficiency and accuracy and have also been used to model composites or laminated beams [11, 13, 15, 16] and shell structures in both the linear [3, 9] and nonlinear [1, 2, 12] range.”