Fig. 9.

Inelastic shear deformations are key to recapitulating valve morphology. a) Removal of the inelastic shear components results in reduced cross-sectional area growth compared to the full growth law. b) Without shear components the cushion does evolve in the direction of flow (dash-blue), but has limited shape change. c) Color maps of the ${\mathcal{F}}_{\mathrm{ry}}$ and ${\mathcal{F}}_{\mathrm{yr}}$ display the large inelastic shear deformations throughout the cushion.