Comparison of constitutive models of arterial layers with distributed collagen fibre orientations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU111845" target="_blank" >RIV/00216305:26210/14:PU111845 - isvavai.cz</a>
Result on the web
<a href="http://www.actabio.pwr.wroc.pl/Vol16No3/6.pdf" target="_blank" >http://www.actabio.pwr.wroc.pl/Vol16No3/6.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5277/abb140306" target="_blank" >10.5277/abb140306</a>

Result language
angličtina
Original language name
Comparison of constitutive models of arterial layers with distributed collagen fibre orientations
Original language description
Several constitutive models have been proposed for description of mechanical behaviour of soft tissues containing collagen fibres. The model with aligned fibres is modified in this paper to take the dispersion of fibre orientations into account through angular integration and it is compared with the model that is defined through generalized structure tensor. The paper is focused on the effect of fibre dispersion on the resulting stress-strain behaviour predicted by both models analyzed. Analytical calculations are used for the comparison of the mechanical behaviour under a specific biaxial tension mode. The two models have been implemented into commercial finite element code ANSYS via user subroutines and used for numerical simulation resulting in a non-homogeneous stress field. The effects of the fibre dispersion predicted by both models compared differ significantly, e.g., the resulting stress difference between both models is lower than 10% only in the case of extremely small dispersion of collagen fibres orientation. These results are consistent with those of other related literature. The applicability of the model defined through the generalized structure tensor is discussed.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10610 - Biophysics

Project
<a href="/en/project/GA13-16304S" target="_blank" >GA13-16304S: Prediction of rupture of abdominal aortic aneurysm on the basis of computational modelling</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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