Numerical predictions of U-notched sample failure based on a discrete energy argument

S. A. Zahedi*, Costy Kodsi, F. Berto

*Corresponding author for this work

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Abstract

Kodsi (2016) proposed a criterion for isotropic, linear elastic media in a brittle state applicable to both sharp and blunt notches. Fracture toughness and material strength are the only parameters required to operate the criterion. This paper provides a formulation of the criterion specific to blunt notches and further examines the capability of the criterion. Predictions are compared to significant experimental results from U-notched samples that were subject to mixed-mode fracture. Good agreement is demonstrated, justifying and substantiating the theory.

Original languageEnglish
JournalTheoretical and Applied Fracture Mechanics
Volume100
Pages (from-to)298-306
ISSN0167-8442
DOIs
Publication statusPublished - 1 Apr 2019

Keywords

  • Brittle fracture
  • Crack onset
  • Failure predictions
  • Fracture criterion
  • U-notched samples

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