Journal
COMPUTATIONAL MECHANICS
Volume 55, Issue 6, Pages 1211-1225Publisher
SPRINGER
DOI: 10.1007/s00466-015-1166-x
Keywords
Fluid-structure interaction; Bioprosthetic heart valve; Isogeometric analysis; Immersogeometric analysis; Arbitrary Lagrangian-Eulerian; NURBS and T-splines; Kirchhoff-Love shell; Fung-type hyperelastic model
Funding
- NIH/NHLBI [R01 HL108330]
- CSEM Graduate Fellowship
- ARO [W911NF-14-1-0296]
- European Research Council [259229 ISOBIO]
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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.
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