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–parameter strain energy density function based on a combination of an isotropic Neo–Hookean expression and a Fung–type orthotropic expression was used. The computational model was based on the boundary value problem of an inflated thick–walled tube with axial pre–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
—