Detail publikace

Poisson's ratio of arterial wall – inconsistency of constitutive models with experimental data

SKÁCEL, P. BURŠA, J.

Anglický název

Poisson's ratio of arterial wall – inconsistency of constitutive models with experimental data

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

Poisson's ratio of fibrous soft tissues is analyzed in this paper on the basis of constitutive models and experimental data. Three different up-to-date constitutive models accounting for the dispersion of fibre orientations are analyzed. Their predictions of the anisotropic Poisson's ratios are investigated under finite strain conditions together with the effects of specific orientation distribution functions and of other parameters. The applied constitutive models predict the tendency to lower (or even negative) out-of-plane Poisson's ratio. New experimental data of porcine arterial layer under uniaxial tensile conditions in orthogonal directions are also presented and compared with the theoretical predictions and other literature data. The results point out the typical features of recent constitutive models with fibres concentrated in circumferential-axial plane of arterial layers and their potential inconsistence with some experimental data. The volumetric (in)compressibility of arterial tissues is also discussed as an eventual and significant factor influencing this inconsistency.

Anglický abstrakt

Poisson's ratio of fibrous soft tissues is analyzed in this paper on the basis of constitutive models and experimental data. Three different up-to-date constitutive models accounting for the dispersion of fibre orientations are analyzed. Their predictions of the anisotropic Poisson's ratios are investigated under finite strain conditions together with the effects of specific orientation distribution functions and of other parameters. The applied constitutive models predict the tendency to lower (or even negative) out-of-plane Poisson's ratio. New experimental data of porcine arterial layer under uniaxial tensile conditions in orthogonal directions are also presented and compared with the theoretical predictions and other literature data. The results point out the typical features of recent constitutive models with fibres concentrated in circumferential-axial plane of arterial layers and their potential inconsistence with some experimental data. The volumetric (in)compressibility of arterial tissues is also discussed as an eventual and significant factor influencing this inconsistency.

Klíčová slova anglicky

Arterial wall mechanics; Poisson's ratio; Compressibility; Anisotropy; Constitutive modelling; Hyperfit software

Vydáno

15.02.2016

Nakladatel

Elsevier

Místo

Nizozemsko

ISSN

1751-6161

Ročník

54

Číslo

1

Strany od–do

316–327

Počet stran

12

BIBTEX


@article{BUT122955,
  author="Pavel {Skácel} and Jiří {Burša},
  title="Poisson's ratio of arterial wall – inconsistency of constitutive models with experimental data",
  year="2016",
  volume="54",
  number="1",
  month="February",
  pages="316--327",
  publisher="Elsevier",
  address="Nizozemsko",
  issn="1751-6161"
}