Figure 8. Effective wall stress distributions in different geometrical models of AAA.

(A) Idealized bended-tubular axisymmetric model. (B) Idealized axisymmetric model of AAA with inclusion of thrombus. (C) Patient-specific model. In all cases, an internal pressure of 0.016 N/mm² (120 mmHg) was applied. For the geometries considered, effective wall stresses (in units of N/mm²) are shown as computed using reference, conventional and linear models (left). Plots of the effective wall stress with respect to the normalized thickness in the regions indicated by the black arrows are shown (middle). Differences in the effective wall stress with respect to reference wall stresses for the linear and conventional approaches are also shown (right).