CAI Xiangwen,HAN Qingsong,ZHANG Qingxiang,FENG Xiaojuan,XUE Yu.Numerical Simulation on Support Performance of NiTi Alloy Thoracic Aortic Stent[J].Journal of medical biomechanics,2020,35(4):278-282
镍钛合金胸主动脉支架支撑性能数值模拟
Numerical Simulation on Support Performance of NiTi Alloy Thoracic Aortic Stent
Received:April 24, 2019  Revised:June 18, 2019
DOI:
Chinese key words:  胸主动脉支架  支撑性能  有限元分析  力学性能
English Key words:thoracic aortic stent  support performance  finite element analysis  mechanical properties
Fund project:内蒙古自治区自然科学基金项目(2015MS0511,2019MS08176)
Author NameAffiliation
CAI Xiangwen School of Mechanical Engineering, Inner Mongolia University of Technology 
HAN Qingsong School of Mechanical Engineering, Inner Mongolia University of Technology 
ZHANG Qingxiang School of Mechanical Engineering, Inner Mongolia University of Technology 
FENG Xiaojuan School of Mechanical Engineering, Inner Mongolia University of Technology 
XUE Yu School of Mechanical Engineering, Inner Mongolia University of Technology 
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Chinese abstract:
      目的 研究不同支撑体高度、支撑体个数和截面尺寸对镍钛合金胸主动脉支架支撑性能的影响。方法 利用AutoCAD 2016和SoildWorks 2014建立27款不同参数支架模型,利用HyperMesh 14.0进行四面体网格划分,利用ABAQUS 2017进行支撑性能模拟分析。结果 支撑体高度降低,支撑刚度增加;截面尺寸越大,支撑刚度越大;随着支撑体个数增多,支撑刚度增加。支撑性能影响因素中,影响程度由大到小依次为支撑体高度、截面尺寸、支撑体个数。结论 研究结果对胸主动脉支架的开发和研究具有一定指导意义,为临床支架的选择及优化提供理论依据。
English abstract:
      Objective To study the influence of different support heights, support numbers and cross-sectional dimensions on support performance of NiTi thoracic aortic stents. Methods Twenty-seven scaffold models with different parameters were established by using AutoCAD 2016 and SoildWorks 2014 software. HyperMesh 14.0 was used for tetrahedral mesh division, and ABAQUS 2017 was used for support performance simulation analysis. Results With the decrease of support height, the support stiffness would increase; a larger cross-section size would lead to a larger support stiffness; with the increase of support numbers, the support stiffness would increase. Among the influencing factors of support performance, the order of influence degree was support height>section size>support numbers. Conclusions The research findings have certain guiding significance for the development and research of thoracic aortic stents, and provide theoretical basis for the selection and optimization of clinical stents.
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