Squeezing flow of compressible viscoelastic material with partial slip

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00236298" target="_blank" >RIV/68407700:21220/15:00236298 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00027022:_____/15:#0000073

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Squeezing flow of compressible viscoelastic material with partial slip

Popis výsledku v původním jazyce

This contribution deals with the problem of squeezing flow of compressible viscoelastic material considering partial slip at the surface of compressing circular plates. Rheological behavior of compressed samples is described by a power law model of shear deformation (consistency K and flow behavior index m) and viscoelastic properties are expressed using power law relation for first normal stress difference (K’, m’). Alternative formulation takes into account only elongation and normal stresses. Squeezed material is considered as a foam, i.e. incompressible continuous phase filled by air bubbles. Partial slip at wall is expressed by dimensionless parameter δ proportional to slip velocity that is independent of consistency and stresses. Suggested mathematical models result to analytical expression for axial force as a function of compression rate and the thickness of gap. The models are applied for experiment with the sample of collagen compressed between two parallel disks of the texture analyzer instrument TA-XT2i.

Název v anglickém jazyce

Squeezing flow of compressible viscoelastic material with partial slip

Popis výsledku anglicky

This contribution deals with the problem of squeezing flow of compressible viscoelastic material considering partial slip at the surface of compressing circular plates. Rheological behavior of compressed samples is described by a power law model of shear deformation (consistency K and flow behavior index m) and viscoelastic properties are expressed using power law relation for first normal stress difference (K’, m’). Alternative formulation takes into account only elongation and normal stresses. Squeezed material is considered as a foam, i.e. incompressible continuous phase filled by air bubbles. Partial slip at wall is expressed by dimensionless parameter δ proportional to slip velocity that is independent of consistency and stresses. Suggested mathematical models result to analytical expression for axial force as a function of compression rate and the thickness of gap. The models are applied for experiment with the sample of collagen compressed between two parallel disks of the texture analyzer instrument TA-XT2i.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-23482S" target="_blank" >GA14-23482S: Tepelné, elektrické a reologické vlastnosti kolagenní hmoty</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Bulletin of Applied Mechanics

ISSN

1801-1217

e-ISSN

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Svazek periodika

11

Číslo periodika v rámci svazku

38

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

15

Strana od-do

4-18

Kód UT WoS článku

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EID výsledku v databázi Scopus

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