目前有限元模型的泊松比值太低，无法将软组织视为几乎不可压缩的：人类足跟区域的插图。

IF 1.7 4区医学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computer Methods in Biomechanics and Biomedical Engineering Pub Date : 2024-11-01 Epub Date: 2023-10-17 DOI:10.1080/10255842.2023.2269286

Nolwenn Fougeron, Alessio Trebbi, Bethany Keenan, Yohan Payan, Gregory Chagnon

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引用次数: 0

摘要

文献中充分报道了组织的几乎不可压缩性，但很少将模拟计算的体积变化与体内测量进行比较。在这项研究中，使用数字体积相关性从分割的医学图像中估计了人类足跟区域受控压痕期间脂肪垫的体积变化。使用有限元建模重现了该实验，脂肪垫的泊松比有几个值，从0.4500到0.4999。泊松比的单一值不能适用于所有压痕情况。预计体积变化在0.9%至11.7%之间。

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Current poisson's ratio values of finite element models are too low to consider soft tissues nearly-incompressible: illustration on the human heel region.

Tissues' nearly incompressibility was well reported in the literature but little effort has been made to compare volume variations computed by simulations with in vivo measurements. In this study, volume changes of the fat pad during controlled indentations of the human heel region were estimated from segmented medical images using digital volume correlation. The experiment was reproduced using finite element modelling with several values of Poisson's ratio for the fat pad, from 0.4500 to 0.4999. A single value of Poisson's ratio could not fit all the indentation cases. Estimated volume changes were between 0.9% - 11.7%.

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来源期刊

Computer Methods in Biomechanics and Biomedical Engineering 工程技术-工程：生物医学

CiteScore

4.10

自引率

6.20%

发文量

179

审稿时长

4-8 weeks

期刊介绍： The primary aims of Computer Methods in Biomechanics and Biomedical Engineering are to provide a means of communicating the advances being made in the areas of biomechanics and biomedical engineering and to stimulate interest in the continually emerging computer based technologies which are being applied in these multidisciplinary subjects. Computer Methods in Biomechanics and Biomedical Engineering will also provide a focus for the importance of integrating the disciplines of engineering with medical technology and clinical expertise. Such integration will have a major impact on health care in the future.