使用有限元素方法对狗气管支架的疲劳分析
Hun-Young Yoon1,2, Jin-Young Choi1
1Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, South Korea.
Veterinary and animal science
|February 23, 2024
概括
与S6和D6设计相比,D7尼醇支架设计的疲劳寿命和稳定性更好. 有限元素分析证实了D7的存在.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 兽医医学 兽医医学 兽医医学
背景情况:
- 狗气管缩 (TC) 需要有效的支架干预.
- 尼丁醇支架通常用于TC治疗,但设计变化会影响性能.
- 在生理力下对支架设计进行比较分析对于优化治疗结果至关重要.
研究的目的:
- 评估和比较三种尼丁醇支架设计 (S6,D6,D7) 在各种施加力的疲劳性能.
- 通过计算机模拟来评估支架位移和疲劳寿命.
- 根据结构稳定性和刚性,确定最佳的支架设计,用于治疗犬气管崩.
主要方法:
- 为S6 (单织,0.006"线),D6 (双织,0.006"线) 和D7 (双织,0.007"线) 尼醇支架构建三维有限元素模型.
- 模拟生理力量的应用:200 mmHg的压缩,纯扭曲和联合曲扭曲.
- ·米塞斯应力计算用于位移分析,并绘制古德曼图来进行疲劳寿命比较.
主要成果:
- D7支架设计在压缩,扭曲和曲扭曲力下表现出最小的位移.
- 与S6和D6支架相比,D7的疲劳寿命明显更长.
- S6显示出最大的位移,而D6提供了比S6.6更好的稳定性.
- D7在循环负荷下表现出最大的结构稳定性和刚性.
结论:
- 有限元方法分析对于比较不同支架设计的结构稳定性和疲劳寿命是有效的.
- D7尼丁醇支架设计为治疗狗气管缩提供了卓越的机械稳定性和耐疲劳性.
- 设计参数,如线材配置和直径,在生理压力下显著影响支架性能.
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