超弹性材料模型用于模拟环压缩器的变形
Kyra M Wanuch1, Alexandra Blokker2, Hamed Kalami2
1Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON, N2L 3G1, Canada.
Journal of the mechanical behavior of biomedical materials
|August 21, 2024
概括
这项研究开发了皮纸箱的超弹性材料模型,使其机械行为的精确有限元分析成为可能. 这有助于对骨盆底障碍器械的生物力学理解.
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
- 妇科器械 妇科器械
背景情况:
- 盆腔对于治疗盆底疾病至关重要,但它们的机械行为尚未得到充分研究.
- 定制 pessary 制造是昂贵和耗时的,限制了设计优化.
- 有限元 (FE) 建模为分析形力学提供了经济有效的替代方案,但仍需要准确的材料数据.
研究的目的:
- 为了识别用于带支持 (RWS) 环形制造中的的超弹性材料模型.
- 通过FE分析,在各种条件下验证这些模型.
- 为了使型囊的生物力学分析和设计能够得到改进.
主要方法:
- 在两个材料 (Shore 60A和40A) 上进行了单轴张力和压缩试验.
- 将实验数据与Mooney-Rivlin (MR) 的超弹性材料模型相匹配.
- 通过比较FEBio模拟RWS形折叠和3点曲试验与实验结果来验证MR模型.
主要成果:
- 成功确定了测试的材料的超弹性材料模型.
- FE模型与折叠和曲模拟的实验力位移数据有很好的一致性.
- 模型准确性在不同的RWS尺寸和硬度中是一致的.
结论:
- 超弹性材料模型有效地捕捉了散料的机械反应.
- 使用这些模型进行FE分析,可提供可靠的生物机械洞察力,用于RWS盘设计.
- 这项研究有助于在未来的推算分析和优化Pessary设备的进步.
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