BIOMECHANICAL STUDY OF THE STENOZED AORTIC VALVE STRUCTURE IN THE CYLINDER DILATATION FOR DIFFERENT AGE GROUPS
Presents a technique for studying the stress-strain state of stenotic aortic valve structures with balloon dilatation correction for three age groups in the greatest risk zone. Analysis of the literature sources was carried out in order to implement the method, from which geometric parameters and mechanical properties of the aortic valve structures were obtained. A content model of balloon dilatation of the aortic valve was constructed. Assumptions for simplifying the model were introduced. A computer geometric model of the stenotic aortic valve in the SolidWorks software complex was constructed and its adequacy was substantiated. A finite-element model of the aortic valve in the SolidWorks Simulation package was created. As a result, the values of the dilatation pressure at each loading step for the mature, elderly and senile age group were obtained. Graphs of the dependence of the applied pressure on the sequence number of the loading step were plotted from these values. The resulting stress plots for each of the age groups under consideration are also presented.The resulting stress plots for each of the age groups were constructed.
Authors: P. A. Kvindt, A. L. Ovsepian, A. I. Al-Kiswani, P. I. Begun
Direction: Bioengineeringl Systems in Medicine and Ecology
Keywords: Aortic valve, aortic stenosis, balloon dilatation, modeling, finite element method, SolidWorks, stress-strain state
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