Identification of relaxation parameter of a small latex tube

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F12%3A00199452" target="_blank" >RIV/68407700:21220/12:00199452 - isvavai.cz</a>

Výsledek na webu

<a href="http://epilepsy.biomed.cas.cz/hb2012/HB2012_files/HB2012_abstracts.pdf" target="_blank" >http://epilepsy.biomed.cas.cz/hb2012/HB2012_files/HB2012_abstracts.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Identification of relaxation parameter of a small latex tube

Popis výsledku v původním jazyce

This paper presents a fluid transient inflation experiment with a viscoelastic latex tube and its numerical simulation. Mathematical description of experimental setup (inflated tube, piping and pressurized vessel) is based on the windkessel model and ona nonlinear viscoelastic constitutive model of the inflated tube. The viscoelastic model is derived from the principle of maximized dissipated energy. Resulting system of ordinary differential equations is solved numerically by implicit Euler method. A thin wall latex tube of a small diameter (5mm) was tested first by a static inflation giving purely elastic part of the constitutive viscoelastic model. The following transient experiment (recording frequency and attenuation of pressure oscillations) enables to identify a relaxation parameter of the suggested viscoelastic model. Attenuation of the recorded pressure oscillation is caused by the tested sample viscoelasticity but also by fluid friction. To asses the influence of the (undesir

Název v anglickém jazyce

Identification of relaxation parameter of a small latex tube

Popis výsledku anglicky

This paper presents a fluid transient inflation experiment with a viscoelastic latex tube and its numerical simulation. Mathematical description of experimental setup (inflated tube, piping and pressurized vessel) is based on the windkessel model and ona nonlinear viscoelastic constitutive model of the inflated tube. The viscoelastic model is derived from the principle of maximized dissipated energy. Resulting system of ordinary differential equations is solved numerically by implicit Euler method. A thin wall latex tube of a small diameter (5mm) was tested first by a static inflation giving purely elastic part of the constitutive viscoelastic model. The following transient experiment (recording frequency and attenuation of pressure oscillations) enables to identify a relaxation parameter of the suggested viscoelastic model. Attenuation of the recorded pressure oscillation is caused by the tested sample viscoelasticity but also by fluid friction. To asses the influence of the (undesir

Druh

O - Ostatní výsledky

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>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