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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU131404" target="_blank" >RIV/00216305:26210/19:PU131404 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167844218306232?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167844218306232?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tafmec.2019.01.024" target="_blank" >10.1016/j.tafmec.2019.01.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GJ17-08447Y" target="_blank" >GJ17-08447Y: Výpočtové modelování porušování vysoce porézních keramických materiálů s reálnými výrobními defekty</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Theoretical and Applied Fracture Mechanics

ISSN

0167-8442

e-ISSN

1872-7638

Svazek periodika

100

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

242-250

Kód UT WoS článku

000462107700025

EID výsledku v databázi Scopus

2-s2.0-85060671762