Failure analysis of brittle elastic notched structures utilising finite fracture mechanics procedures

Jochen Hebel, Wilfried Becker, Dominique Leguillon, Zohar Yosibash

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, different types of finite fracture mechanics procedures to predict crack initiation in brittle elastic notched structures subject to mixed-mode loading are investigated. A hybrid failure model is employed taking into account the stress field in the undamaged structure and the energy balance for the formation of cracks exhibiting a finite length. Asymptotic formulations are compared to a direct numerical implementation. Experiments carried out on notched brittle specimens exhibiting various geometries and loading-modes are analysed by means of both approaches. It is found that the predictions from the model agree well with the experimental results. Furthermore, the dominance of the asymptotical formulations for finite geometries is discussed.

Original languageEnglish
Title of host publication17th European Conference on Fracture 2008
Subtitle of host publicationMultilevel Approach to Fracture of Materials, Components and Structures
Pages718-725
Number of pages8
StatePublished - 1 Dec 2008
Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
Duration: 2 Sep 20085 Sep 2008

Publication series

Name17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
Volume1

Conference

Conference17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
Country/TerritoryCzech Republic
CityBrno
Period2/09/085/09/08

Keywords

  • Brittle fracture
  • Failure initiation
  • Finite fracture mechanics
  • Mixed-mode.
  • Notch

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