The Nonlinear Analysis of the Biopresthetic Heart Valve
In order to improve long-term durability of bioprosthetic heart valve, we take the spherical,paraboloidal,cylindrical and the ellipsoidal leaflets for nonlinear analysis and the material is orthotropic.The experimental results of the finite element nonlinear analysis show that when the leaflets with the material orthotropic is closed,the deformation of the symmetric edge is larger than else. The stress distribution of the cylindrical, spherical, paraboloidal and ellipsoidal valve leaflets is quite different. The ellipsoidal valve leaflets have more advantages than the cylindrical, spherical, paraboloidal valve leaflets.This work is very helpful to manufacture reasonable shaped valvular leaflets and to prolong the lifetime of the bioprosthetic heart valve.
Dongye Sun, Wen-Pei Sung and Ran Chen
H. B. Ma et al., "The Nonlinear Analysis of the Biopresthetic Heart Valve", Applied Mechanics and Materials, Vols. 71-78, pp. 3438-3442, 2011