Computational analysis of crack-like defects influence on the open cell ceramic foam tensile strength

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00495409" target="_blank" >RIV/68081723:_____/18:00495409 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26210/18:PU128961

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.774.271" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.774.271</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.774.271" target="_blank" >10.4028/www.scientific.net/KEM.774.271</a>

Result language

angličtina

Original language name

Computational analysis of crack-like defects influence on the open cell ceramic foam tensile strength

Original language description

This work deals with a computational analysis and quantification of the influence of processing (primarily crack-like) defects of various amount on the (tensile) strength of open cell ceramic foam structures. This information is essential e.g. for application of these materials in the mechanically loaded application, where a design with certain reliability to operating conditions is required. The analysed ceramic foam structures are composed of both regular and irregular cells and crack-like defects (pre-cracked struts) are simulated inside them. The foam structure is modelled using a 3D FE beam element based model created by utilization of the Voronoi tessellation technique. The tensile strength upon presence of various amount of pre-cracked struts is analysed based upon an iterative FE simulation on whose base the critical failure force leading to specimen fracture is determined. The performed parametric study relates the tensile strength of the foam structure to the amount of initial defects. With increasing amount of these defects, the foam strength decreases by approximately 30% with every 10% of broken struts. This information can be directly used for a fast estimation of the foam tensile strength if the fraction of broken struts to the intact ones is known (e.g. from a microscopic analysis).

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20504 - Ceramics

Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Article name in the collection

Advances in Fracture and Damage Mechanics XVII

ISBN

978-3-0357-1350-3

ISSN

1013-9826

e-ISSN

—

Number of pages

6

Pages from-to

271-276

Publisher name

Trans Tech Publications

Place of publication

Zürich

Event location

Bangkok

Event date

Sep 4, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—