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Statements

Subject Item
n2:RIV%2F49777513%3A23520%2F06%3A00000288%21RIV07-MSM-23520___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
A model of elastic artery is presented that describes the vessel as a two-layer thick-wall cylindrical tube where each layer is treated as a composite of two constituents: the passive fibres (representing the collagen or elastin fibres) embedded in the isotropic matrix (representing other constituents including the extracellular substance). This mathematical model involves many constitutive parameters which must be identified using experimental results of a macroscopic specimen of the healthy artery. The proportional representation of the basic components in terms of volume fractions (also the elastin length density, the diameter of the aorta and the thickness of the wall) were determined using both microscopic and macroscopic morphometry of the tissue samples. In order to find the constitutive parameters, quasi-static uniaxial traction tests of samples from porcine aorta were performed. Methods based on optimization are adopted to the material identification. V tomto příspěvku představujeme model elastické artérie, která je modelována jako dvouvrstvá silnostěnná trubice, kde je každá z vrstev popsána jako kompozit dvou prvků: pasivních vláken představujících kolagenní či elastinová vlákna, a isotropní matrice, jež zahrnuje ostatní složky včetně mezibuněčné substance. Tento matematický model obsahuje řadu konstitutivních parametrů, které musí být identifikovány na základě experimetu na vzorku zdravé aorty. Proporcionální zastoupení základních komponent vyjádřených objemovými poměry, rovněž tak i průměr aorty a tloušťka stěny byly určeny použitím mikroskopické a makroskopické morfometrie tkáňových vzorků. Za ú A model of elastic artery is presented that describes the vessel as a two-layer thick-wall cylindrical tube where each layer is treated as a composite of two constituents: the passive fibres (representing the collagen or elastin fibres) embedded in the isotropic matrix (representing other constituents including the extracellular substance). This mathematical model involves many constitutive parameters which must be identified using experimental results of a macroscopic specimen of the healthy artery. The proportional representation of the basic components in terms of volume fractions (also the elastin length density, the diameter of the aorta and the thickness of the wall) were determined using both microscopic and macroscopic morphometry of the tissue samples. In order to find the constitutive parameters, quasi-static uniaxial traction tests of samples from porcine aorta were performed. Methods based on optimization are adopted to the material identification.
dcterms:title
Kompozitní model zdravé arteriální stěny: identifikace materiálových parametrů založená na testech jednoosou napjatostí a morfometrii. Composite model of healthy arterial wall: material identification based on uniaxial tensile tests and morphometric analysis Composite model of healthy arterial wall: material identification based on uniaxial tensile tests and morphometric analysis
skos:prefLabel
Kompozitní model zdravé arteriální stěny: identifikace materiálových parametrů založená na testech jednoosou napjatostí a morfometrii. Composite model of healthy arterial wall: material identification based on uniaxial tensile tests and morphometric analysis Composite model of healthy arterial wall: material identification based on uniaxial tensile tests and morphometric analysis
skos:notation
RIV/49777513:23520/06:00000288!RIV07-MSM-23520___
n3:strany
622
n3:aktivita
n7:P n7:Z
n3:aktivity
P(1K04008), Z(MSM4977751303)
n3:cisloPeriodika
0
n3:dodaniDat
n11:2007
n3:domaciTvurceVysledku
n15:8036519 n15:8318751 n15:1351958 n15:4490673 n15:5496349
n3:druhVysledku
n8:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
469423
n3:idVysledku
RIV/49777513:23520/06:00000288
n3:jazykVysledku
n18:eng
n3:klicovaSlova
material identification; uniaxial tensile test; morphometry; arterial wall; composite model
n3:klicoveSlovo
n4:composite%20model n4:arterial%20wall n4:material%20identification n4:uniaxial%20tensile%20test n4:morphometry
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[64A73B22ECCF]
n3:nazevZdroje
Journal of Biomechanics
n3:obor
n16:JI
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
6
n3:projekt
n5:1K04008
n3:rokUplatneniVysledku
n11:2006
n3:tvurceVysledku
Tonar, Zbyněk Polanský, Jiří Cimrman, Robert Boiron, Olivier Rohan, Eduard Demjančuková, Libuše
n3:zamer
n6:MSM4977751303
s:issn
0021-9290
s:numberOfPages
1
n19:organizacniJednotka
23520