Detail publikace

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

SKÁCEL, P. BURŠA, J.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

arterial wall mechanics, collagen fibre orientation, constitutive modelling, fibre distribution, hyperfit software

Autoři

SKÁCEL, P.; BURŠA, J.

Rok RIV

2014

Vydáno

22. 9. 2014

Nakladatel

Wroclaw univ technology

Místo

Wroclav, Poland

ISSN

1509-409X

Periodikum

Acta of Bioengineering and Biomechanics

Ročník

2014

Číslo

03

Stát

Polská republika

Strany od

47

Strany do

58

Strany počet

12

URL

http://www.actabio.pwr.wroc.pl/Vol16No3/6.pdf

BibTex

@article{BUT111388,
  author="Pavel {Skácel} and Jiří {Burša}",
  title="Comparison of constitutive models of arterial layers with distributed collagen fibre orientations",
  journal="Acta of Bioengineering and Biomechanics",
  year="2014",
  volume="2014",
  number="03",
  pages="47--58",
  doi="10.5277/abb140306",
  issn="1509-409X",
  url="http://www.actabio.pwr.wroc.pl/Vol16No3/6.pdf"
}