Mixed mode fracture initiation and trajectory prediction under random stresses

M. Grigoriu, M. T.A. Saif, S. El Borgi, A. R. Ingraffea

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A method is developed for estimating (i) confidence intervals on the initial direction of crack extension and (ii) the probability of crack initiation in plane stress and plane strain problems. The method accounts for the uncertainty in applied stresses, fracture toughness, and crack geometry. It is based on classical theories of linear fracture mechanics for homogeneous isotropic materials, a computer code for deterministic fracture mechanics analysis (FRANC) and first and second order structural reliability algorithms (FORM/SORM). Several examples are presented to demonstrate the use and generality of the proposed method for probabilistic fracture mechanics analysis.

Original languageEnglish
Pages (from-to)19-34
Number of pages16
JournalInternational Journal of Fracture
Volume45
Issue number1
DOIs
Publication statusPublished - 1 Sep 1990

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ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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