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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10610 - Biophysics

Projekt

<a href="/cs/project/GA13-16304S" target="_blank" >GA13-16304S: Predikce ruptury výdutě břišní aorty na základě výpočtového modelování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta of Bioengineering and Biomechanics

ISSN

1509-409X

e-ISSN

—

Svazek periodika

2014

Číslo periodika v rámci svazku

03

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

12

Strana od-do

47-58

Kód UT WoS článku

000345162000006

EID výsledku v databázi Scopus

2-s2.0-84929924162