期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 198, 期 45-46, 页码 3603-3612出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2008.09.012
关键词
Fluid-structure interaction; Contact; Cardiac valves
In this article, we present a partitioned procedure for fluid-structure interaction problems in which contacts among different deformable bodies can occur. A typical situation is the movement of a thin valve (e.g. the aortic valve) immersed in an incompressible viscous fluid (e.g. the blood). In the proposed strategy the fluid and structure solvers are considered as independent black-boxes that exchange forces and displacements; the structure solvers are moreover not supposed to manage contact by themselves. The hypothesis of non-penetration among solid objects defines a non-convex optimization problem. To solve the latter, we use an internal approximation algorithm that is able to directly handle the cases of thin structures and self-contacts. A numerical simulation on an idealized aortic valve is finally realized with the aim of illustrating the proposed scheme. (C) 2008 Elsevier B.V. All rights reserved.
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