INFLUENCE OF CERAMIC FOAM PARAMETERS ON THE FRACTURE BEHAVIOUR UPON THE TENSILE TEST

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU125158" target="_blank" >RIV/00216305:26210/17:PU125158 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
INFLUENCE OF CERAMIC FOAM PARAMETERS ON THE FRACTURE BEHAVIOUR UPON THE TENSILE TEST
Original language description
The contribution deals with numerical simulation of response of the open cell ceramic foam to tensile loading and attempts to predict experimental fracture-mechanics behaviour of the foams using numerical FE model composed of beam elements. Models of different structure irregularity (including regular one) are considered and generated using 3D Voronoi tessellation technique. Complete fracture of the model is simulated by iterative FE simulations where in each step, one strut with maximal tensile stress (higher than the material tensile strength) is removed until complete separation of the model in two parts. Critical forces, leading to complete breakage of the foam structure, together with final fracture "surfaces", are investigated and compared for both regular and irregular structures. It is shown that the regular foam structure, composed of Kelvin cells, exhibit generally 10 - 20 % higher fracture resistance than the irregular foam structures and also that structures with smaller cells should be more fracture resistant than the structures with bigger cells.
Czech name
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Czech description
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Project
<a href="/en/project/GJ17-08447Y" target="_blank" >GJ17-08447Y: Computational modelling of failure in highly porous ceramic materials with real intrinsic defects</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Engineering Mechanics 2017
ISBN
978-80-214-5497-2
ISSN
1805-8248
e-ISSN
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Number of pages
1150
Pages from-to
862-865
Publisher name
ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC
Place of publication
Praha
Event location
Svratka
Event date
May 15, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000411657600205

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