About: Identification of material parameters of an aortic wall

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 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 (en) 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. (cs)
Title	Identification of material parameters of an aortic wall Identification of material parameters of an aortic wall (en) Identifikace materiálových parametrů aortální stěny (cs)
skos:prefLabel	Identification of material parameters of an aortic wall Identification of material parameters of an aortic wall (en) Identifikace materiálových parametrů aortální stěny (cs)
skos:notation	RIV/68407700:21220/06:02123445!RIV07-GA0-21220___
http://linked.open.../vavai/riv/strany	173;181
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/04/1181), Z(MSM6840770012)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Macková, Hana Žitný, Rudolf Chlup, Hynek
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta strojní
http://linked.open...dnocenehoVysledku	478724
http://linked.open...ai/riv/idVysledku	RIV/68407700:21220/06:02123445
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Fung-type model; Neo-Hookean model; aorta; constitutive modeling; hyperelasticity; inflation test (en)
http://linked.open.../riv/klicoveSlovo	hyperelasticity inflation test Fung-type model aorta constitutive modeling Neo-Hookean model
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[45C23A454632]
http://linked.open...i/riv/nazevZdroje	Bulletin of Applied Mechanics
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Identification of the vessel wall materials properties
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	2
http://linked.open...iv/tvurceVysledku	Chlup, Hynek Horný, L. Žitný, Rudolf Macková, Hana
http://linked.open...n/vavai/riv/zamer	Transdisciplinární výzkum v oblasti biomedicínského inženýrství II
issn	1801-1217
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	21220

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