Fig. 3.

Circumferential active first Piola-Kirchhoff stress, T_θθactive^theory = $\frac{2C_2}{b_1\sqrt{\pi }}\exp \left[-{\left(\frac{{\lambda }_{\theta }}{b_1}+\frac{{\lambda }_z}{b_2}-b{\prime }^{\prime }\right)}^2\right]$ (A), and axial active first Piola-Kirchhoff stress, T_zzactive^theory = $\frac{2C_2}{b_2\sqrt{\pi }}\exp \left[-{\left(\frac{{\lambda }_{\theta }}{b_1}+\frac{{\lambda }_z}{b_2}-b\prime \right)}^2\right]$ (B), as a function of λ_θ at λ_z of 1.3. Parameters, C₂, b₁, b₂, and b′, have values of 7.88, 0.24, 0.43, and 8.60 for intima-medial layer (Table 2) and 4.18, 0.12, 0.18, and 20.3 for intact vessel (Table 2 in Ref. 10).