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

Fougeron, Nolwenn, Trebbi, Alessio, Keenan, Bethany ORCID: https://orcid.org/0000-0001-7787-2892, Payan, Yohan and Chagnon, Gregory 2024. Current poisson's ratio values of finite element models are too low to consider soft tissues nearly-incompressible: illustration on the human heel region. Computer Methods in Biomechanics and Biomedical Engineering 27 (14) , pp. 1999-2008. 10.1080/10255842.2023.2269286

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Abstract

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%.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Taylor and Francis Group
ISSN:	1025-5842
Date of First Compliant Deposit:	8 January 2024
Date of Acceptance:	5 October 2023
Last Modified:	12 Nov 2024 14:30
URI:	https://orca.cardiff.ac.uk/id/eprint/163266

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