Detail publikace

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

ŠEVEČEK, O. MAJER, Z. KOTOUL, M.

Originální název

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

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Ceramic foam, Fracture, FEM, Voronoi tessellation, Tensile test

Autoři

ŠEVEČEK, O.; MAJER, Z.; KOTOUL, M.

Vydáno

15. 5. 2017

Nakladatel

ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC

Místo

Praha

ISBN

978-80-214-5497-2

Kniha

Engineering Mechanics 2017

Číslo edice

1

ISSN

1805-8248

Periodikum

Engineering Mechanics ....

Číslo

2017

Stát

Česká republika

Strany od

862

Strany do

865

Strany počet

1150

BibTex

@inproceedings{BUT140776,
  author="Oldřich {Ševeček} and Zdeněk {Majer} and Michal {Kotoul}",
  title="INFLUENCE OF CERAMIC FOAM PARAMETERS ON THE FRACTURE BEHAVIOUR UPON THE TENSILE TEST",
  booktitle="Engineering Mechanics 2017",
  year="2017",
  journal="Engineering Mechanics ....",
  number="2017",
  pages="862--865",
  publisher="ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC",
  address="Praha",
  isbn="978-80-214-5497-2",
  issn="1805-8248"
}