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

被引：1

作者：

Fougeron, Nolwenn ^{[1
]}

Trebbi, Alessio ^{[1
]}

Keenan, Bethany ^{[2
]}

Payan, Yohan ^{[1
]}

Chagnon, Gregory ^{[1
]}

机构：

[1] Univ Grenoble Alpes, CNRS, UMR 5525, Grenoble INP,TIMC, Grenoble, France

[2] Cardiff Univ, Cardiff Sch Engn, Cardiff, Wales

来源：

COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING | 2023年 / 27卷 / 14期

关键词：

Poisson ratio; soft tissues; incompressibility; volume changes; strains; ANISOTROPIC MECHANICAL-PROPERTIES; ELASTIC PROPERTIES; BUTTOCK; COMPRESSION; PREVENTION; STIFFNESS; MODULUS; MUSCLE; THIGH; PAD;

D O I：

10.1080/10255842.2023.2269286

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

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%.

引用

页码：1999 / 2008

页数：10