Cohesive cracking in negative geometries

S. Wang, I. E. Gharamti, J. P. Dempsey

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
1 Downloads (Pure)

Abstract

An isolated cohesive crack loaded by a central concentrated load and a cohesive edge crack loaded by concentrated loading at the crack mouth are examined. In the cohesive zones of both cases, rectangular softening and linear softening are investigated. A distinct peak load does not occur for these negative geometries. The traction-free crack grows at the instant that the process zone is fully developed. In a negative geometry, in order to maintain traction-free crack propagation, the load ratio must always increase, ensuring that stable crack growth always occurs.
Original languageEnglish
Article number106681
JournalEngineering Fracture Mechanics
Volume221
Early online date20 Sep 2019
DOIs
Publication statusPublished - 1 Nov 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • negative geometry
  • isolated crack
  • edge crack
  • cohesive zone
  • rectangular softening
  • linear softening

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