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@article{Grigoriadis:2016:10.1016/j.jmbbm.2016.09.003,
author = {Grigoriadis, G and Newell, N and Carpanen, D and Christou, A and Bull, AMJ and Masouros, S},
doi = {10.1016/j.jmbbm.2016.09.003},
journal = {Journal of the Mechanical Behavior of Biomedical Materials},
pages = {398--407},
title = {Material properties of the heel fat pad across strain rates},
url = {http://dx.doi.org/10.1016/j.jmbbm.2016.09.003},
volume = {65},
year = {2016}
}
TY - JOUR
AB - 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 (C10=0.1MPa, C30=7MPa, K=2GPa) and Pronys terms (A1=0.06, A2=0.77, A3=0.02 for τ1=1ms, τ2=10ms, τ3=10s). 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.
AU - Grigoriadis,G
AU - Newell,N
AU - Carpanen,D
AU - Christou,A
AU - Bull,AMJ
AU - Masouros,S
DO - 10.1016/j.jmbbm.2016.09.003
EP - 407
PY - 2016///
SN - 1751-6161
SP - 398
TI - Material properties of the heel fat pad across strain rates
T2 - Journal of the Mechanical Behavior of Biomedical Materials
UR - http://dx.doi.org/10.1016/j.jmbbm.2016.09.003
UR - http://hdl.handle.net/10044/1/40036
VL - 65
ER -