Detail publikačního výsledku

Modelling of cracking of the ceramic foam specimen with a central notch under the tensile load

ŠEVEČEK, O.; BERTOLLA, L.; CHLUP, Z.; ŘEHOŘEK, L.; MAJER, Z.; MARCIÁN, P.; KOTOUL, M.

Originální název

Modelling of cracking of the ceramic foam specimen with a central notch under the tensile load

Anglický název

Modelling of cracking of the ceramic foam specimen with a central notch under the tensile load

Druh

Článek WoS

Originální abstrakt

In this contribution, open cell ceramic foam structures composed of regular/irregular shape cells and containing macroscopic central notch/crack are investigated in terms of their cracking upon the tensile loading and their strength is predicted using the FE simulations. The developed model of the real ceramic foam specimen contains a central notch/crack and is subjected to a tension, resulting in a failure beginning at the tip of the notch. The work discusses an approach how to predict the critical failure load and also the crack path in the foam structure. Various cell irregularity and size of the macroscopic notch is considered in the investigations. Predictions of the foam structure cracking are performed using the beam element based FE model having characteristics of the real foam structure and by utilization of the stress criterion which considers failure of particular struts, when the maximal stress on them reaches the tensile strength of the ceramic material. Outputs from simulations are compared with available experimental observations and with an estimation of the critical failure load calculated using the developed analytical model.

Anglický abstrakt

In this contribution, open cell ceramic foam structures composed of regular/irregular shape cells and containing macroscopic central notch/crack are investigated in terms of their cracking upon the tensile loading and their strength is predicted using the FE simulations. The developed model of the real ceramic foam specimen contains a central notch/crack and is subjected to a tension, resulting in a failure beginning at the tip of the notch. The work discusses an approach how to predict the critical failure load and also the crack path in the foam structure. Various cell irregularity and size of the macroscopic notch is considered in the investigations. Predictions of the foam structure cracking are performed using the beam element based FE model having characteristics of the real foam structure and by utilization of the stress criterion which considers failure of particular struts, when the maximal stress on them reaches the tensile strength of the ceramic material. Outputs from simulations are compared with available experimental observations and with an estimation of the critical failure load calculated using the developed analytical model.

Klíčová slova

Ceramic foam; notch; fracture; FE model; Kelvin cell; tensile test.

Klíčová slova v angličtině

Ceramic foam; notch; fracture; FE model; Kelvin cell; tensile test.

Autoři

ŠEVEČEK, O.; BERTOLLA, L.; CHLUP, Z.; ŘEHOŘEK, L.; MAJER, Z.; MARCIÁN, P.; KOTOUL, M.

Rok RIV

2019

Vydáno

25.01.2019

Nakladatel

Elsevier

Místo

Netherlands

ISSN

0167-8442

Periodikum

THEORETICAL AND APPLIED FRACTURE MECHANICS

Svazek

100

Číslo

1

Stát

Nizozemsko

Strany od

242

Strany do

250

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S0167844218306232?via%3Dihub

BibTex

@article{BUT155948,
  author="Oldřich {Ševeček} and Luca {Bertolla} and Zdeněk {Chlup} and Lukáš {Řehořek} and Zdeněk {Majer} and Petr {Marcián} and Michal {Kotoul}",
  title="Modelling of cracking of the ceramic foam specimen with a central notch under the tensile load",
  journal="THEORETICAL AND APPLIED FRACTURE MECHANICS",
  year="2019",
  volume="100",
  number="1",
  pages="242--250",
  doi="10.1016/j.tafmec.2019.01.024",
  issn="0167-8442",
  url="https://www.sciencedirect.com/science/article/pii/S0167844218306232?via%3Dihub"
}