FIG. 5.

(a) Prediction of our model for the overall mechanical response of the RVFW tissue under equibiaxial strain path (E₁₁ = E₂₂) for control and PAH cases. (b) A representative fit of our constitutive model (solid lines) to the PAH tissue response (markers). The corresponding results of the “uniform-recruitment” model are included for comparison (dashed lines) where the upper bound strain (E_ub) and the interaction module ($k_1^{mc}$) are constant within the depth. The parameters in each model were separately estimated. The horizontal axis represents E₁₁ and E₂₂ for S₁₁ and S₂₂, respectively. (c) The corresponding fit for the case of a control specimen. The result indicated that a transmural variation of recruitment properties was necessary to capture the mechanical behavior of PAH specimens.