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Constitutive modeling of coronary artery bypass graft with incorporated torsion

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    SYSNO ASEP0333216
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleConstitutive modeling of coronary artery bypass graft with incorporated torsion
    Author(s) Horný, L. (CZ)
    Chlup, Hynek (UT-L)
    Žitný, R. (CZ)
    Adámek, T. (CZ)
    Source TitleMetalurgija - ISSN 0543-5846
    Roč. 49, č. 2 (2009), s. 273-277
    Number of pages5 s.
    Languageeng - English
    CountryHR - Croatia
    Keywordscoronary artery bypass graft ; constitutive model ; digital image correlation
    Subject RIVBJ - Thermodynamics
    R&D ProjectsGA106/08/0557 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z20760514 - UT-L (2005-2011)
    AnnotationThe aim of this study is to describe mechanical response of coronary artery bypass graft (CABG). Attention was paid to sensitivity of a model to small torsions superimposed to an inflation and extension of an artery. The inflation-extension test was performed. A presence of torsions was proved via displacements analysis based on digital image correlation. CABG was modeled as nonlinearly hyperelastic, anisotropic and incompressible material with thin-walled cylindrical geometry. A strain energy function based on limiting fiber extensibility was used. Estimation of material parameters led to good agreement between the model and observations. It was concluded that the model is insensitive to small torsions superimposed to inflation-extension of the artery.
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2010
Number of the records: 1  

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