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Material properties of the heel fat pad across strain rates
The complex structural and material behaviour of the human heel fat pad determines the transmission of plantar loading to the lower limb across a wide range of loading scenarios; from locomotion to injurious incidents. The aim of this study was to quantify the hyper-viscoelastic material properties...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5161234/ https://www.ncbi.nlm.nih.gov/pubmed/27643676 http://dx.doi.org/10.1016/j.jmbbm.2016.09.003 |
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author | Grigoriadis, Grigoris Newell, Nicolas Carpanen, Diagarajen Christou, Alexandros Bull, Anthony M.J. Masouros, Spyros D. |
author_facet | Grigoriadis, Grigoris Newell, Nicolas Carpanen, Diagarajen Christou, Alexandros Bull, Anthony M.J. Masouros, Spyros D. |
author_sort | Grigoriadis, Grigoris |
collection | PubMed |
description | The complex structural and material behaviour of the human heel fat pad determines the transmission of plantar loading to the lower limb across a wide range of loading scenarios; from locomotion to injurious incidents. The aim of this study was to quantify the hyper-viscoelastic material properties of the human heel fat pad across strains and strain rates. An inverse finite element (FE) optimisation algorithm was developed and used, in conjunction with quasi-static and dynamic tests performed to five cadaveric heel specimens, to derive specimen-specific and mean hyper-viscoelastic material models able to predict accurately the response of the tissue at compressive loading of strain rates up to 150 s(−1). The mean behaviour was expressed by the quasi-linear viscoelastic (QLV) material formulation, combining the Yeoh material model ([Formula: see text] , [Formula: see text] , [Formula: see text]) and Prony׳s terms ([Formula: see text] , [Formula: see text] , [Formula: see text] for [Formula: see text] , [Formula: see text] , [Formula: see text]). These new data help to understand better the functional anatomy and pathophysiology of the foot and ankle, develop biomimetic materials for tissue reconstruction, design of shoe, insole, and foot and ankle orthoses, and improve the predictive ability of computational models of the foot and ankle used to simulate daily activities or predict injuries at high rate injurious incidents such as road traffic accidents and underbody blast. |
format | Online Article Text |
id | pubmed-5161234 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-51612342017-01-01 Material properties of the heel fat pad across strain rates Grigoriadis, Grigoris Newell, Nicolas Carpanen, Diagarajen Christou, Alexandros Bull, Anthony M.J. Masouros, Spyros D. J Mech Behav Biomed Mater Research Paper The complex structural and material behaviour of the human heel fat pad determines the transmission of plantar loading to the lower limb across a wide range of loading scenarios; from locomotion to injurious incidents. The aim of this study was to quantify the hyper-viscoelastic material properties of the human heel fat pad across strains and strain rates. An inverse finite element (FE) optimisation algorithm was developed and used, in conjunction with quasi-static and dynamic tests performed to five cadaveric heel specimens, to derive specimen-specific and mean hyper-viscoelastic material models able to predict accurately the response of the tissue at compressive loading of strain rates up to 150 s(−1). The mean behaviour was expressed by the quasi-linear viscoelastic (QLV) material formulation, combining the Yeoh material model ([Formula: see text] , [Formula: see text] , [Formula: see text]) and Prony׳s terms ([Formula: see text] , [Formula: see text] , [Formula: see text] for [Formula: see text] , [Formula: see text] , [Formula: see text]). These new data help to understand better the functional anatomy and pathophysiology of the foot and ankle, develop biomimetic materials for tissue reconstruction, design of shoe, insole, and foot and ankle orthoses, and improve the predictive ability of computational models of the foot and ankle used to simulate daily activities or predict injuries at high rate injurious incidents such as road traffic accidents and underbody blast. Elsevier 2017-01 /pmc/articles/PMC5161234/ /pubmed/27643676 http://dx.doi.org/10.1016/j.jmbbm.2016.09.003 Text en © 2016 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Research Paper Grigoriadis, Grigoris Newell, Nicolas Carpanen, Diagarajen Christou, Alexandros Bull, Anthony M.J. Masouros, Spyros D. Material properties of the heel fat pad across strain rates |
title | Material properties of the heel fat pad across strain rates |
title_full | Material properties of the heel fat pad across strain rates |
title_fullStr | Material properties of the heel fat pad across strain rates |
title_full_unstemmed | Material properties of the heel fat pad across strain rates |
title_short | Material properties of the heel fat pad across strain rates |
title_sort | material properties of the heel fat pad across strain rates |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5161234/ https://www.ncbi.nlm.nih.gov/pubmed/27643676 http://dx.doi.org/10.1016/j.jmbbm.2016.09.003 |
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