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Identification of material parameters of an aortic wall

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F06%3A02123445" target="_blank" >RIV/68407700:21220/06:02123445 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Identification of material parameters of an aortic wall

  • Original language description

    Inflation tests with human thoracic aorta specimens were performed with the aim of fitting a material model. The experimental data was used in a nonlinear regression analysis to identify the material parameters. The aortic tissue was assumed to be an incompressible hyperelastic material. 5&#8211;parameter strain energy density function based on a combination of an isotropic Neo&#8211;Hookean expression and a Fung&#8211;type orthotropic expression was used. The computational model was based on the boundary value problem of an inflated thick&#8211;walled tube with axial pre&#8211;strains. Residual strains were included. The internal structure of the arterial walls was not considered. The fitted material models correspond very well with the experimental data. Significant stiffening under large strains was observed. It was concluded that the combined model of the strain energy density function is suitable for the aortic mechanical response description. The material parameters satisfy the c

  • Czech name

    Identifikace materiálových parametrů aortální stěny

  • Czech description

    Inflační testy se vzorky lidské hrudní aorty byly provedeny za účelem identifikace materiálových parametrů cévní stěny. Pětiparametrická funkce hustoty deformační energie kombinující klasický fungovský model a neohookeovský materiál byla použita jako konstitutivní rovnice. Byla provedena nelineární regrese. Nalezené parametry fitují model velmi dobře. Konstitutivní rovnice splňuje podmínky konvexnosti.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BJ - Thermodynamics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA106%2F04%2F1181" target="_blank" >GA106/04/1181: Identification of the vessel wall materials properties</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Bulletin of Applied Mechanics

  • ISSN

    1801-1217

  • e-ISSN

  • Volume of the periodical

    2

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    9

  • Pages from-to

    173-181

  • UT code for WoS article

  • EID of the result in the Scopus database