Table 2.
Parameters employed in the FE element simulations of abdominal aortic aneurysms.
| geometry and loading | ||||
|---|---|---|---|---|
| parameter | description | early AAA | late AAA | refs. |
| R0 (mm) | radius of healthy aortic wall | ____________ 5.61 _____________ | [52] | |
| T0 (mm) | thickness of aortic wall | ____________ 1.46 _____________ | [52] | |
| dan (mm) | maximum diameter of AAA in vivo | ___________ 45-55-65 ___________ | ||
| 2R0,an (mm) | initial diameter of the AAA (for each dan) | 36.4-45.0-53.6 | 39.7-49.0-56.6 | |
| f1 (−) | geometric parameter | _____________ 4.0 _____________ | ||
| c1 (−) | geometric parameter | _____________ 0.5 _____________ | ||
| λax (−) | axial prestretch in vivo | ____________ 1.184 ____________ | ||
| p (mmHg) | internal pressure | ____________ 120.0 ____________ | ||
| material parameters | ||||
| parameter | description | early AAA [40] | late AAA [40] | ILT [45] |
| μA (kPa) | shear modulus of matrix | 0.59 | 3.78 | — |
| μI (kPa) | stress-like parameter for ILT | — | — | 9.26 |
| b (−) | non-dimensional parameter for ILT | — | — | 1.62 |
| k1 (kPa) | shear modulus of fibres | 1.30 | 8.96 | |
| k2 (−) | exponential parameter of fibres | 47.51 | 636.29 | |
| κip (−) | in-plane fibre dispersion | 0.242 | 0.224 | |
| κop (−) | out-of-plane fibre dispersion | 0.433 | 0.402 | |
| α (deg) | in-plane fibre anglea | 6.55 | 22.90 | |
aWith respect to the local circumferential direction.