The effect of material model formulation in the stress analysis of abdominal aortic aneurysms.
The effect of material model formulation in the stress analysis of abdominal aortic aneurysms.
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DOI:
10.1007/s10439-009-9767-1
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发表时间:
2009-11
影响因子:
3.8
通讯作者:
Finol, Ender A.
中科院分区:
文献类型:
--
作者:
Rodriguez, Jose F.;Martufi, Giampalo;Doblare, Manuel;Finol, Ender A.
关键词:
A reliable estimation of wall stress in Abdominal Aortic Aneurysms (AAAs), requires performing an accurate three-dimensional reconstruction of the medical image-based native geometry and modeling an appropriate constitutive law for the aneurysmal tissue material characterization. A recent study on the biaxial mechanical behavior of human AAA tissue specimens demonstrates that aneurysmal tissue behaves mechanically anisotropic. Results shown in this communication show that the peak wall stress is highly sensitive to the anisotropic model used for the stress analysis. In addition, the present investigation indicates that structural parameters (e.g., collagen fiber orientation) should be determined independently and not by means of non-linear fitting to stress-strain test data. Fiber orientation identified in this manner could lead to overestimated peak wall stresses.
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影响因子:
4.3
作者:
Fillinger, MF;Marra, SP;Kennedy, FE
通讯作者:
Kennedy, FE
影响因子:
2
作者:
Holzapfel, GA;Gasser, TC;Ogden, RW
通讯作者:
Ogden, RW
影响因子:
1.6
作者:
Klinkel, S;Govindjee, S
通讯作者:
Govindjee, S
影响因子:
3.8
作者:
Di Martino, ES;Vorp, DA
通讯作者:
Vorp, DA
DOI:
10.1115/1.3127256
发表时间:
2009-06-01
影响因子:
1.7
作者:
Martufi, Giampaolo;Di Martino, Elena S.;Finol, Ender A.
通讯作者:
Finol, Ender A.