Young's modulus of isotropic porous materials with spheroidal pores

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F14%3A43898226" target="_blank" >RIV/60461373:22310/14:43898226 - 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

Young's modulus of isotropic porous materials with spheroidal pores

Popis výsledku v původním jazyce

Based on the Eshelby solution for the single-inclusion problem and Wu's specification of this solution to spheroidal pores, we show that theEshelby-Wu coefficients for Young's modulus, in contrast to their counterparts for the bulk and shear moduli, arequite insensitive to changes of the Poisson ratio. Therefore the Eshelby-Wu coefficients of Young's modulus can be described (to a very good approximation) by a unique function of the aspect ratio, which is calculated in this paper and for which a mastercurve is obtained by segment-wise fitting. Also the implementation of the Eshelby-Wu coefficients into the well-known effective medium approximations (Maxwell, self-consistent, differential) and our exponential relation is discussed. Irrespective of themodel into which the Eshelby-Wu coefficients are implemented, prolate pore shape affects the porosity dependence of Young's modulus only very weakly, whereas oblate pore shape can lead to an arbitrary reduction of Young's modulus.

Název v anglickém jazyce

Young's modulus of isotropic porous materials with spheroidal pores

Popis výsledku anglicky

Based on the Eshelby solution for the single-inclusion problem and Wu's specification of this solution to spheroidal pores, we show that theEshelby-Wu coefficients for Young's modulus, in contrast to their counterparts for the bulk and shear moduli, arequite insensitive to changes of the Poisson ratio. Therefore the Eshelby-Wu coefficients of Young's modulus can be described (to a very good approximation) by a unique function of the aspect ratio, which is calculated in this paper and for which a mastercurve is obtained by segment-wise fitting. Also the implementation of the Eshelby-Wu coefficients into the well-known effective medium approximations (Maxwell, self-consistent, differential) and our exponential relation is discussed. Irrespective of themodel into which the Eshelby-Wu coefficients are implemented, prolate pore shape affects the porosity dependence of Young's modulus only very weakly, whereas oblate pore shape can lead to an arbitrary reduction of Young's modulus.

Druh

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

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F12%2F1170" target="_blank" >GAP108/12/1170: Porézní keramika s řízenou elasticitou a tepelnou vodivostí</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

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Svazek periodika

34

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

13

Strana od-do

3195-3207

Kód UT WoS článku

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EID výsledku v databázi Scopus

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