Pressurization of axially prestretched tube: consequences for arterial mechanics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F20%3A00337470" target="_blank" >RIV/68407700:21220/20:00337470 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/chapter/10.1007%2F978-3-030-31635-8_68" target="_blank" >https://link.springer.com/chapter/10.1007%2F978-3-030-31635-8_68</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-030-31635-8_68" target="_blank" >10.1007/978-3-030-31635-8_68</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pressurization of axially prestretched tube: consequences for arterial mechanics

Popis výsledku v původním jazyce

It is well known that in their in situ position, arteries are axially prestretched. They retract upon excision as a consequence. Studies of the prestretch have shown that it depends on location in arterial tree. Axial prestretch increases with increasing distance from the heart. It has also been shown that the prestretch changes with age. Aging damages internal architecture of arteries and consequently longitudinal pretension is gradually loosen. Results obtained in laboratory experiments document that there is specific value of the prestretch under which axial deformation of the pressurized artery is negligible. Under such conditions, mechanical work performed by the pressure on axial displacements is negligible which is advantageous from biomechanical point of view. In the present study, by adopting the Gent model of the strain energy density function to characterize mechanical properties of the artery and assuming that this artery satisfies assumptions of the membrane theory, it will be shown that the value of prestretch, which minimizes axial displacement, also maximizes internal volume attained in the pressurization of the tube.

Název v anglickém jazyce

Pressurization of axially prestretched tube: consequences for arterial mechanics

Popis výsledku anglicky

It is well known that in their in situ position, arteries are axially prestretched. They retract upon excision as a consequence. Studies of the prestretch have shown that it depends on location in arterial tree. Axial prestretch increases with increasing distance from the heart. It has also been shown that the prestretch changes with age. Aging damages internal architecture of arteries and consequently longitudinal pretension is gradually loosen. Results obtained in laboratory experiments document that there is specific value of the prestretch under which axial deformation of the pressurized artery is negligible. Under such conditions, mechanical work performed by the pressure on axial displacements is negligible which is advantageous from biomechanical point of view. In the present study, by adopting the Gent model of the strain energy density function to characterize mechanical properties of the artery and assuming that this artery satisfies assumptions of the membrane theory, it will be shown that the value of prestretch, which minimizes axial displacement, also maximizes internal volume attained in the pressurization of the tube.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA18-26041S" target="_blank" >GA18-26041S: Vliv podélného předepnutí na mechanickou odezvu nelineárních elastických a viskoelastických trubic</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

XV Mediterranean Conference on Medical and Biological Engineering and Computing – MEDICON 2019

ISBN

978-3-030-31635-8

ISSN

—

e-ISSN

1680-0737

Počet stran výsledku

8

Strana od-do

569-576

Název nakladatele

Springer International Publishing AG

Místo vydání

Cham

Místo konání akce

Coimbra

Datum konání akce

26. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000582693600068