Application of Hyperelastic Nodal Force Method to Evaluation of Aortic Valve Cusps Coaptation: Thin Shell vs. Membrane Formulations

Coaptation characteristics are crucial in an assessment of the competence reconstructed aortic valves. Shell or membrane formulations can be used to model valve cusps coaptation. In this paper we compare both terms their coaptation for first time. Our numerical thin shell is based on a combination hyperelastic nodal forces method and rotation-free finite elements. The verified several popular benchmarks thin-shell analysis. relative error with respect reference solutions does not exceed 1–2%. We apply our closure idealized varying hyperelasticity models shear moduli. become almost insensitive elastic potentials sensitive bending stiffness, which reduces zone.