Damage Zone Size Limit During the Crack Propagation

  • Hamid Hamli Benzahar Department of Civil and Mechanical Engineering, Faculty of Technology University Djillali Bounaama Khemis Miliana,Route de Theniet El-Had, 44225, Algeria
  • Mohamed Chabaat Department of Structures and Materials, Civil Engineering. Faculty, University of Sciences and Technology Houari Boumediene, B.P. 32 El-Alia, Bab Ezzouar, Algiers, 16111, Algeria

Abstract

The principal goal of this work is to limit the damage zone length during the crack propagation in brittle materials. This study is based on the determination of stress fields by varying the distance between a semi-infinite crack and a neighboring dislocation. The model suggested is a rectangular element (a dish), having a semi-infinite crack in one of its ends and a dislocation located in the vicinity of a crack-tip, subjected to a tensile stress on mode I. The problem is treated numerically using Finite Element Method.For each distance between the two cracks (semi-infinite crack and dislocation), stress fields are given. On the basis of these stress fields, a limiting damage zone length is obtained.

Keywords: dislocation, semi-infinite crack, stress, propagation, damage zone
Published online
2020-01-08
How to Cite
Hamli Benzahar, H., & Chabaat, M. (2020). Damage Zone Size Limit During the Crack Propagation. Periodica Polytechnica Civil Engineering, 64(1), 73-80. https://doi.org/10.3311/PPci.14745
Section
Research Article