poroelastic model of intraluminal thrombus in FEA of aortic aneurysm

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F10%3APU87820" target="_blank" >RIV/00216305:26210/10:PU87820 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

poroelastic model of intraluminal thrombus in FEA of aortic aneurysm

Popis výsledku v původním jazyce

The influence of the intraluminal thrombus (ILT) on the biomechanics of the abdominal aortic aneurysm (AAA) has been investigated for several years both numerically and experimentally. The FE analyses published till now simplified the material of the ILTas a homogenous continuum, but there is a contradiction between experiments and FE results. Therefore we use a poroelastic constitutive model for ILT. Poroelastic behaviour of the used finite element is based on the Biot theory of consolidation, the model consists of fluid and solid parts. By using idealized AAA models, we showed that the pres-sure decrease through the ILT is small for an 18mm thick ILT. Therefore approx. 90% of the blood pressure is acting on the inner AAA wall surface. These resultsagree very well with all experimental results, which show either slight or no pressure reduction. The wall stresses calculated by our approach are almost the same as those obtained by using the homogenous material model for ILT. Remarkabl

Název v anglickém jazyce

poroelastic model of intraluminal thrombus in FEA of aortic aneurysm

Popis výsledku anglicky

The influence of the intraluminal thrombus (ILT) on the biomechanics of the abdominal aortic aneurysm (AAA) has been investigated for several years both numerically and experimentally. The FE analyses published till now simplified the material of the ILTas a homogenous continuum, but there is a contradiction between experiments and FE results. Therefore we use a poroelastic constitutive model for ILT. Poroelastic behaviour of the used finite element is based on the Biot theory of consolidation, the model consists of fluid and solid parts. By using idealized AAA models, we showed that the pres-sure decrease through the ILT is small for an 18mm thick ILT. Therefore approx. 90% of the blood pressure is acting on the inner AAA wall surface. These resultsagree very well with all experimental results, which show either slight or no pressure reduction. The wall stresses calculated by our approach are almost the same as those obtained by using the homogenous material model for ILT. Remarkabl

Druh

D - Stať ve sborníku

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F09%2F1732" target="_blank" >GA106/09/1732: VÍCEÚROVŇOVÉ MODELOVÁNÍ CHOVÁNÍ HYPERELASTICKÝCH ANIZOTROPNÍCH MATERIÁLŮ</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

6th world congress of biomechanics, Abstracts

ISBN

978-3-642-14514-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

springer

Místo vydání

singapore

Místo konání akce

singapore

Datum konání akce

1. 8. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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