量化单轴前应力和波导对动态弹性学估计的波导效应,用于一个圆柱形棒
Melika Salehabadi1, Lara Nammari1, Aime Luna1
1UIC Richard and Loan Hill Department of Biomedical Engineering, University of Illinois Chicago, 851 South Morgan Street, Chicago, Illinois 60607, USA.
The Journal of the Acoustical Society of America
|December 1, 2023
概括
本研究探讨了材料前应力和尺寸如何影响动态弹性学. 研究人员采用了坐标转换方法来改进小型预装载结构中的材料性质和预应力估计.
科学领域:
- 材料科学 材料科学 材料科学
- 生物物理学的生物物理.
- 机械工程 机械工程
背景情况:
- 动态弹性学非侵入性地利用机械波动绘制材料粘弹性质的地图.
- 目前的方法往往忽略波导效应和静态预载荷,这些对于某些生物材料至关重要.
- 不同类型的预压力是某些生物组织固有的,影响它们的机械行为.
研究的目的:
- 为了研究单轴前应力和波导效应对动态弹性图的联合效应.
- 适应现有的重建方法,以适应具有固有的异性压力和小尺寸的材料.
- 在没有事先知识的情况下估计材料粘弹性和预应力条件.
主要方法:
- 一个圆柱形的聚合物结构具有同otropic 属性被 subjected to uniaxial elongation. 这是一个圆柱形的聚合物结构.
- 使用光学或磁共振弹性学在各种振动刺激下测量机械波动.
- 用计算有限元模拟来解释实验数据.
主要成果:
- 研究了单轴前应力和波导效应之间的相互作用.
- 用坐标转换方法来估计粘弹性特性和前应力.
- 经过调整的方法在重建材料特性和预应力条件方面取得了部分成功.
结论:
- 前压力和波导效应显著影响动态弹性学测量.
- 适应的坐标转换方法为分析预应力材料提供了一个有前途的方法.
- 为了精确估计复杂的生物组织中的粘弹性和预应力,需要进一步细化.
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