Publication detail

Influence of the Ceramic Foam Structure Irregularity on the Tensile Response

ŠEVEČEK, O. NAVRÁTIL, P. PAPŠÍK, R. SKALKA, P. KOTOUL, M.

Original Title

Influence of the Ceramic Foam Structure Irregularity on the Tensile Response

Type

conference paper

Language

English

Original Abstract

To better understand response or fracture conditions of the ceramic foam materials to the mechanical loading, a finite element (FE) analysis of these structures has to be employed. The cellular structure of foams can be modelled either using a detailed realistic FE model based on the computer tomography scans or by using of simplified, beam element based, models. Nevertheless a main drawback of the realistic foam modelling consists in its high demandingness on computational resources. Therefore, simplified models are welcome substitutions (at least for analysis of the global mechanical foam response). The regular foam structure, based e.g. on Kelvin cells, is simple from the modelling point of view, but it doesn´t exactly capture the fully random character of the real foam structures and corresponding response to the external load. Definition of the random beam foam structure (respecting the real cell shapes and their distribution within volume), can thus improve this deficiency. The main aim of this work is thus to compare these different modelling approaches and quantify the influence of the foam irregularity on the response of ceramic foams to external (tensile) loading for various model sizes.

Keywords

Ceramic foam, irregular foam structure, Voronoi tessellation, FEM

Authors

ŠEVEČEK, O.; NAVRÁTIL, P.; PAPŠÍK, R.; SKALKA, P.; KOTOUL, M.

Released

5. 1. 2017

Publisher

Trans Tech Publications

Location

Švýcarsko

ISBN

978-3-03835-626-4

Book

Materials Structure and Micromechanics of Fracture VIII

ISBN

1662-9779

Periodical

Solid State Phenomena

Year of study

258

Number

1

State

Swiss Confederation

Pages from

161

Pages to

164

Pages count

4

BibTex

@inproceedings{BUT130757,
  author="Oldřich {Ševeček} and Petr {Navrátil} and Roman {Papšík} and Petr {Skalka} and Michal {Kotoul}",
  title="Influence of the Ceramic Foam Structure Irregularity on the Tensile Response",
  booktitle="Materials Structure and Micromechanics of Fracture VIII",
  year="2017",
  journal="Solid State Phenomena",
  volume="258",
  number="1",
  pages="161--164",
  publisher="Trans Tech Publications",
  address="Švýcarsko",
  doi="10.4028/www.scientific.net/SSP.258.161",
  isbn="978-3-03835-626-4",
  issn="1662-9779"
}