Figure 7.

Representative predictions of the (a) circumferential, (b) axial, and (c) radial stress distributions across the arterial wall of the V₂ arterial segment at the in-vivo axial stretch and pressure of 13.33 kPa. The dashed line represents unrestricted radial deformation, where the deformed outer radius r_o is 1.40 mm. Conversely, cases 1–3 indicate different degrees of restriction on the radial deformation characterized by a maximal deformed outer radius (r_o^*) and the lumen pressure at which this limiting radius is realized (P*). Specifically, for case 1, r_o^*= 1.39 mm and P* = 11.83 kPa; for case 2, r_o^*= 1.37 mm and P* = 9.28 kPa; and for case 3, r_o^*= 1.35 mm and P* = 7.42 kPa. (d–f) Stress distributions across the wall of the V₂ arterial segment at fixed radial restriction (maximal deformed outer radius of 1.37 mm) under various pressures.