Poisson's ratio of porous and cellular materials with randomly distributed isometric pores or cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43921365" target="_blank" >RIV/60461373:22310/20:43921365 - isvavai.cz</a>

Výsledek na webu

<a href="https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.17139" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.17139</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.17139" target="_blank" >10.1111/jace.17139</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Poisson's ratio of porous and cellular materials with randomly distributed isometric pores or cells

Popis výsledku v původním jazyce

The porosity dependence of Poisson&apos;s ratio of materials with random microstructure is investigated via analytical and numerical modeling. It is shown that all analytical models predict porosity independence if the solid Poisson ratio is 0.2 and for low porosities a converging trend toward this value with increasing porosity. From all theory-based relations, only power-law and exponential relations allow for auxetic behavior. Numerical calculations on computer-generated digital microstructures (overlapping and isolated spherical pores, pores between overlapping spherical grains, wall-based cellular materials/closed-cell foams, and strut-based cellular materials/open-cell foams) confirm the general qualitative trends of the analytical models, although a closer look reveals significant quantitative differences. Cellular materials and foams exhibit similar features as porous materials in general, but lack their converging trend toward values around 0.2. Comparison of our results with the classical Roberts-Garboczi results shows good agreement, with subtle differences due to the different microstructures generated.

Název v anglickém jazyce

Poisson's ratio of porous and cellular materials with randomly distributed isometric pores or cells

Popis výsledku anglicky

The porosity dependence of Poisson&apos;s ratio of materials with random microstructure is investigated via analytical and numerical modeling. It is shown that all analytical models predict porosity independence if the solid Poisson ratio is 0.2 and for low porosities a converging trend toward this value with increasing porosity. From all theory-based relations, only power-law and exponential relations allow for auxetic behavior. Numerical calculations on computer-generated digital microstructures (overlapping and isolated spherical pores, pores between overlapping spherical grains, wall-based cellular materials/closed-cell foams, and strut-based cellular materials/open-cell foams) confirm the general qualitative trends of the analytical models, although a closer look reveals significant quantitative differences. Cellular materials and foams exhibit similar features as porous materials in general, but lack their converging trend toward values around 0.2. Comparison of our results with the classical Roberts-Garboczi results shows good agreement, with subtle differences due to the different microstructures generated.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</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 periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

—

Svazek periodika

103

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

6961-6977

Kód UT WoS článku

000530906600001

EID výsledku v databázi Scopus

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