Dynamic and fluid-structure interaction simulations of bioprosthetic heart valves using parametric design with T-splines and Fung-type material models.
Dynamic and fluid-structure interaction simulations of bioprosthetic heart valves using parametric design with T-splines and Fung-type material models.
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DOI：
10.1007/s00466-015-1166-x
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发表时间：
2015-06
影响因子：
4.1
通讯作者：
Sacks MS
中科院分区：
文献类型：
--
作者：
Hsu MC;Kamensky D;Xu F;Kiendl J;Wang C;Wu MC;Mineroff J;Reali A;Bazilevs Y;Sacks MS
本文建立在最近开发的浸没几何流体-结构相互作用（FSI）方法的生物心脏瓣膜（BHV）建模和仿真。它在几何设计和本构建模方面增强了所提出的框架。通过这些增强，BHV FSI模拟可以以更高水平的自动化、鲁棒性和物理真实性来执行。此外，本文还比较了FSI分析和由规定的跨瓣压力驱动的独立结构动力学模拟，后者是这类问题更常见的建模选择。FSI计算在预测瓣叶变形方面比其独立的结构动力学对应物实现了更好的生理真实性。
This paper builds on a recently developed immersogeometric fluid–structure interaction (FSI) methodology for bioprosthetic heart valve (BHV) modeling and simulation. It enhances the proposed framework in the areas of geometry design and constitutive modeling. With these enhancements, BHV FSI simulations may be performed with greater levels of automation, robustness and physical realism. In addition, the paper presents a comparison between FSI analysis and standalone structural dynamics simulation driven by prescribed transvalvular pressure, the latter being a more common modeling choice for this class of problems. The FSI computation achieved better physiological realism in predicting the valve leaflet deformation than its standalone structural dynamics counterpart.