Modeling of Arterial Clipping by Finite Element Method

Abstract

The Bioengineering is increasingly present in the fields of scientific research worldwide. It gives answers with high accuracy for problems that often have great difficulty in experimental studies in the laboratory. For this purpose, this study proposes to measure the force exerted by a surgical clip when it is applied in a given region in order to occlude arterial blood flow. This force was measured using a computer simulation, which was built by modeling two cylinders, one representing the arterial wall and the other in this first, representing the blood. This simulation was carried out under the coupling between the two domains using fluid-structure interaction. We used a numerical model of three-dimensional flow inside a cylinder of elastic. The fluid is considered incompressible and Newtonian and is governed by the Navier-Stokes equations. The walls of the structure are modeled from the Hooke's Law. A numerical solution is developed using the finite element method to calculate the pressure fields and fluid velocity, displacement field of the structure and the force applied by the clip for the occurrence of obstruction of blood flow at that location.