About: Limiting fiber extensibility as parameter for damage in venous wall

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.waset.org/journals/ijbls/v7/v7-4-34.pdf
Description	An inflation-extension test with human vena cava inferior was performed with the aim to fit a material model. The vein was modeled as a thick-walled tube loaded by internal pressure and axial force. The material was assumed to be an incompressible hyperelastic fiber reinforced continuum. Fibers are supposed to be arranged in two families of anti-symmetric helices. Considered anisotropy corresponds to local orthotropy. Used strain energy density function was based on a concept of limiting strain extensibility. The pressurization was comprised by four pre-cycles under physiological venous loading (0 - 4kPa) and four cycles under nonphysiological loading (0 - 21kPa). Each overloading cycle was performed with different value of axial weight. Overloading data were used in regression analysis to fit material model. Considered model did not fit experimental data so good. Especially predictions of axial force failed. It was hypothesized that due to nonphysiological values of loading pressure and different values of axial weight the material was not preconditioned enough and some damage occurred inside the wall. A limiting fiber extensibility parameter Jm was assumed to be in relation to supposed damage. Each of overloading cycles was fitted separately with different values of Jm. Other parameters were held the same. This approach turned out to be successful. Variable value of Jm can describe changes in the axial force - axial stretch response and satisfy pressure - radius dependence simultaneously. An inflation-extension test with human vena cava inferior was performed with the aim to fit a material model. The vein was modeled as a thick-walled tube loaded by internal pressure and axial force. The material was assumed to be an incompressible hyperelastic fiber reinforced continuum. Fibers are supposed to be arranged in two families of anti-symmetric helices. Considered anisotropy corresponds to local orthotropy. Used strain energy density function was based on a concept of limiting strain extensibility. The pressurization was comprised by four pre-cycles under physiological venous loading (0 - 4kPa) and four cycles under nonphysiological loading (0 - 21kPa). Each overloading cycle was performed with different value of axial weight. Overloading data were used in regression analysis to fit material model. Considered model did not fit experimental data so good. Especially predictions of axial force failed. It was hypothesized that due to nonphysiological values of loading pressure and different values of axial weight the material was not preconditioned enough and some damage occurred inside the wall. A limiting fiber extensibility parameter Jm was assumed to be in relation to supposed damage. Each of overloading cycles was fitted separately with different values of Jm. Other parameters were held the same. This approach turned out to be successful. Variable value of Jm can describe changes in the axial force - axial stretch response and satisfy pressure - radius dependence simultaneously. (en)
Title	Limiting fiber extensibility as parameter for damage in venous wall Limiting fiber extensibility as parameter for damage in venous wall (en)
skos:prefLabel	Limiting fiber extensibility as parameter for damage in venous wall Limiting fiber extensibility as parameter for damage in venous wall (en)
skos:notation	RIV/00064173:_____/11:#0000190!RIV13-MZ0-00064173
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA106/08/0557), Z(MSM6840770012)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Adámek, T.
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	Fakultní nemocnice Královské Vinohrady
http://linked.open...dnocenehoVysledku	209578
http://linked.open...ai/riv/idVysledku	RIV/00064173:_____/11:#0000190
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Constitutive model, damage fiber, reinforced composite, limiting fiber extensibility, preconditioning, vena cava inferior (en)
http://linked.open.../riv/klicoveSlovo	damage fiber preconditioning reinforced composite vena cava inferior Constitutive model limiting fiber extensibility
http://linked.open...odStatuVydavatele	TR - Turecká republika
http://linked.open...ontrolniKodProRIV	[91319DE4847E]
http://linked.open...i/riv/nazevZdroje	International Journal of Biological & Life Sciences
http://linked.open...in/vavai/riv/obor	EA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Material properties of veins and their remodelling
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	7
http://linked.open...iv/tvurceVysledku	Adámek, Tomáš Horný, Lukáš
http://linked.open...n/vavai/riv/zamer	Transdisciplinární výzkum v oblasti biomedicínského inženýrství II
issn	2010-3824
number of pages	4 (xsd:int)

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