Influence of the cell geometry on the tensile strength of open-cell ceramic foams

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU135578" target="_blank" >RIV/00216305:26210/20:PU135578 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2452321620302110" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452321620302110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2020.01.144" target="_blank" >10.1016/j.prostr.2020.01.144</a>

Result language

angličtina

Original language name

Influence of the cell geometry on the tensile strength of open-cell ceramic foams

Original language description

Nowadays used open cell foam ceramic materials are mostly of irregular structure which means that the shape of particular foam cells does not exhibit any regular pattern. On one hand, such foam structures lead to only very slight anisotropic or even isotropic behavior upon the mechanical loading, but on the other hand they do not have an optimal resistance to failure upon given loading conditions and level of porosity. The strength of the ceramic foam structure can be thus further improved by design of cells having various regular shapes. Such foams can finally exhibit an orthotropic behavior from both the elastic and strength point of view. To understand how different types of cells influence the foam characteristics in various directions, foam structures with various cell shapes were thus studied and investigated in terms of their tensile strength within this contribution. The structures were modelled by means of beam element based FE models and by utilization of the stress criterion defining failure of particular struts. Totally six different cell types were analyzed under consideration of the same porosity of the final foam structure and amount of the strength anisotropy was quantified. Relation between orientation of struts with respect to a loading direction and the foam strength was discussed in more details. Recommendations for an employment of particular cell types for specific loading conditions were given.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20504 - Ceramics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2020

Confidentiality

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

Article name in the collection

9th International Conference Materials Structure & Micromechanics of Fracture (MSMF9)

ISBN

978-80-214-5760-7

ISSN

2452-3216

e-ISSN

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Number of pages

6

Pages from-to

553-558

Publisher name

Elsevier

Place of publication

Itálie

Event location

Brno

Event date

Jun 26, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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