Identification of relaxation parameter from fluid transient test of a small latex tube

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Identification of relaxation parameter from fluid transient test of a small latex tube

Popis výsledku v původním jazyce

This paper presents a fluid transient inflation experiments with a viscoelastic tube with small diameter and its numerical simulation. Mathematical description of experimental setup (inflated tube, piping and pressurized vessel) is based on the windkessel model and a nonlinear viscoelastic constitutive model of the inflated tube, which is derived from the principle of maximised dissipated energy. The governing system of equations is solved by means of the implicit Euler method. Fluid transient simulation was used for relaxation parameter identification of the constitutive viscoelastic model of the specimen. The viscoelastic latex tube was tested by static inflation (this step determines the elastic part of the constitutive model) and by a fluid transient test (this step determines the relaxation parameter). Results obtained from simulations were compared with experimental measurements. The accuracy of Windkessel model was enhanced by approximation of velocity profile with polynomial fu

Název v anglickém jazyce

Identification of relaxation parameter from fluid transient test of a small latex tube

Popis výsledku anglicky

This paper presents a fluid transient inflation experiments with a viscoelastic tube with small diameter and its numerical simulation. Mathematical description of experimental setup (inflated tube, piping and pressurized vessel) is based on the windkessel model and a nonlinear viscoelastic constitutive model of the inflated tube, which is derived from the principle of maximised dissipated energy. The governing system of equations is solved by means of the implicit Euler method. Fluid transient simulation was used for relaxation parameter identification of the constitutive viscoelastic model of the specimen. The viscoelastic latex tube was tested by static inflation (this step determines the elastic part of the constitutive model) and by a fluid transient test (this step determines the relaxation parameter). Results obtained from simulations were compared with experimental measurements. The accuracy of Windkessel model was enhanced by approximation of velocity profile with polynomial fu

Druh

D - Stať ve sborníku

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

16th Workshop of Applied Mechanics

ISBN

978-80-01-05186-3

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

24-27

Název nakladatele

České vysoké učení technické v Praze, Fakulta strojní

Místo vydání

Praha

Místo konání akce

Ústav mechaniky, biomechaniky a mechatroniky

Datum konání akce

7. 12. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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