Wang Wenwen, Feng Haiquan, Wang Xiao, Chen Yanlong, Zhang Ruimin
Mechanical Engineering College, Lnner Mongolia University of Technology, Hohhot 010051, China.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2013 Oct;30(5):1027-32, 1062.
We analyzed coupling expansion process of three different structures of stainless steel (SUS-316LI) stents by using finite element method (FEM) simulation in this study. Firstly we made specific analysis and comparison between three stents of deformation and stress-strain distribution in the coupling expansion process and then we described the shortening rate, radial bounce rate, expand nonuniformity, safety factor and other biological mechanics performance of the three stents quantitatively. And finally we analyzed the influencing factors and the best structure of the three kinds of the stainless steel stent comprehensively. Through all the processes, we have verified the rationality of the finite element simulation result by using the expansion test in vitro.
在本研究中，我们采用有限元方法（FEM）模拟分析了三种不同结构的不锈钢（SUS - 316LI）支架的耦合扩张过程。首先，我们对三种支架在耦合扩张过程中的变形和应力 - 应变分布进行了具体分析和比较，然后定量描述了三种支架的缩短率、径向回弹率、扩张不均匀度、安全系数等生物力学性能。最后，我们全面分析了三种不锈钢支架的影响因素和最佳结构。通过所有这些过程，我们利用体外扩张试验验证了有限元模拟结果的合理性。
