Detail publikace

Computational Analysis of Crack-Like Defects Influence on the Open Cell Ceramic Foam Tensile Strength

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

Originální název

Computational Analysis of Crack-Like Defects Influence on the Open Cell Ceramic Foam Tensile Strength

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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).

Klíčová slova

Ceramic foam, fracture, crack defect, FEM, tensile test

Autoři

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

Vydáno

1. 8. 2018

Nakladatel

Trans Tech Publications

Místo

Švýcarsko

ISBN

9783035713503

Kniha

Advances in Fracture and Damage Mechanics XVII

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Ročník

774

Číslo

1

Stát

Švýcarská konfederace

Strany od

271

Strany do

276

Strany počet

6

URL

https://www.scientific.net/KEM.774.271

BibTex

@inproceedings{BUT149860,
  author="Oldřich {Ševeček} and Zdeněk {Majer} and Petr {Marcián} and Luca {Bertolla} and Michal {Kotoul}",
  title="Computational Analysis of Crack-Like Defects Influence on the Open  Cell Ceramic Foam Tensile Strength",
  booktitle="Advances in Fracture and Damage Mechanics XVII",
  year="2018",
  journal="Key Engineering Materials (print)",
  volume="774",
  number="1",
  pages="271--276",
  publisher="Trans Tech Publications",
  address="Švýcarsko",
  doi="10.4028/www.scientific.net/KEM.774.271",
  isbn="9783035713503",
  issn="1013-9826",
  url="https://www.scientific.net/KEM.774.271"
}