Cohesive cracking in negative geometries

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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
Early online date20 Sep 2019
Publication statusPublished - 1 Nov 2019
MoE publication typeA1 Journal article-refereed


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

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