Computational Modeling of Stent Implant Procedure and Comparison of Different Stent Materials

Abstract

A stent in artery is subjected to significant mechanical loads due to the repetitive cyclical pressure loads and displacement of the artery wall. The arteries expands and contracts slightly as the pressure changes with the heart beat for long-term in-vivo service. The structure of the stent has to withstand these loads while scaffolding the narrow artery. Many different stent designs and materials have been studied. In our previous study [Alargasamy et. al. Mechanical properties of High Entropy Alloy Al0.1CoCrFeNi for Peripheral Vascular Stent Application, Cardiovascular Engineering and Technology] mechanical properties of High Entropy Alloy (HEA) are determined experimentally, the one to one comparison of these HEAs with stainless steel 316L was done. In this study in order to understand the behavior of HEA materials in actual stent implant application, the operation is simulated compuationally, using ANSYS Workbench, by applying stainless steel 316L and high entropy alloy properties as the material properties for the 3D stent model.