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Updated: Feb 27, 2026

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

Published on: May 18, 2015

在近静态辐射压缩下对聚合物和金属生物吸收性鼻腔支架的比较有限元素评估

Wenyu Fu^1,2, Aiping Yang^1,2, Aike Qiao^3,4

¹College of Robotics, Beijing Union University, Beijing 100027, China.

Journal of functional biomaterials

|February 26, 2026

概括

这项研究表明,与PLGA和PCL相比,Mg合金可生物降解支架提供了优越的辐射压力和稳定性,有效地解决了医疗植入物中的临床位移问题.

科学领域:

生物材料工程生物材料工程
医疗器械设计医疗器械设计
计算力学计算力学计算力学

背景情况:

临床使用PROPEL Mini支架显示出移位和位置不稳定的问题.
可生物降解的支架需要优化的机械性能,以获得有效的临床性能.
了解材料对支架机制的影响对于改善植入物稳定性至关重要.

研究的目的:

研究不同可生物降解材料对支架机械性能的影响.
在模拟生理条件下评估支架位置稳定性和辐射压力.
为开发改进的可生物降解支架提供基础,克服临床限制.

主要方法:

使用Abaqus/Explicit进行有限元分析 (FEA) 来建模支架行为.
模拟装载-卸载周期以评估直径,长度和辐射压力.
对特定材料的可塑性和弹性回收的定量评估.

主要成果:

合金和PLGA支架由于可塑性而表现出不可逆转的几何变化,与完全恢复的PCL不同.
合金支架表现出优越的辐射压力 (6.8 kPa) 和功能恢复范围 (26.5 mm),确保了稳定性.
PCL支架显示出广泛的恢复,但可以忽略的辐射压力,而PLGA的支持和恢复有限.

结论:

像Mg合金这样的高强度材料可以增强辐射固力,而不会改变支架结构.
可生物降解的支架材料选择显著影响植入后的稳定性和功能扩张.
使用Mg合金为可生物降解支架的临床位移问题提供了一个有希望的解决方案.

关键词:

可生物降解的鼻腔支架有限元分析是有限元分析.装载卸载歇斯底里存在塑料变形的塑料变形辐射压力辐射压力

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