无镍不锈钢冠脉支架力学行为的有限元模拟  

Finite Element Analysis on Mechanical Behaviors of Nickel-Free Stainless Steel Coronary Stent

作　　者：毛志刚[1,2] 谭丽丽[2] 郑丰[2] 黄洁雯[1] 樊新民[1] 杨柯[2] 

机构地区：[1]南京理工大学,南京210094 [2]中国科学院金属研究所,沈阳110016

出　　处：《材料研究学报》2012年第2期125-131,共7页Chinese Journal of Materials Research

基　　金：国家重点基础研究发展计划(973)2012CB619101资助项目~~

摘　　要：以无镍不锈钢为支架材料,以冠脉支架结构为研究对象,对其压缩和扩张过程中的力学行为和柔顺性能进行了模拟计算,研究了支架压握并扩张后的轴向回弹率、径向回弹率以及不同端部网丝宽度支架的变形行为,计算出支架的弯矩-挠度曲线及支架的柔软度。结果表明,所研究的无镍不锈钢支架具有较小的轴向与径向回弹率,在变形过程中表现出良好的弹性弯曲变形性能。The mechanical behaviors during crimping and expansion as well as the flexibility of coronary stent made of nickel-free stainless steel were simulated in this paper. The longitudinal recoil, radial recoil and the deformation behavior in crimping and expansion for different stent mesh width were investigated. The moment-deflection curve and flexibility of the stent were calculated. The results show that the nickel-free stainless steel stent has smaller longitudinal and radial recoil, and excellent flexibility in elastic bending deformation process.

关 键 词：材料科学基础学科 无镍不锈钢 冠脉支架 力学行为 有限元模拟 

分 类 号：TG142[一般工业技术—材料科学与工程]