Abstract：
:Hyperelastic material models have been incorporated in the rotation-free, large deformation, shell finite element (FE) formulation of (Stolarski et al., 2013) and applied to dynamic simulations of aortic heart valve. Two models used in the past in analysis of such problem i.e. the Saint-Venant and May-Newmann-Yin (MNY) material models have been considered and compared. Uniaxial tests for those constitutive equations were performed to verify the formulation and implementation of the models. The issue of leaflets interactions during the closing of the heart valve at the end of systole is considered. The critical role of using non-linear anisotropic model for proper dynamic response of the heart valve especially during the closing phase is demonstrated quantitatively. This work contributes an efficient FE framework for simulating biological tissues and paves the way for high-fidelity flow structure interaction simulations of native and bioprosthetic aortic heart valves.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Gilmanov A,Stolarski H,Sotiropoulos Fdoi
10.1016/j.jbiomech.2016.11.031subject
Has Abstractpub_date
2017-01-04 00:00:00pages
56-62eissn
0021-9290issn
1873-2380pii
S0021-9290(16)31205-2journal_volume
50pub_type
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