An analytical study on the effects of strain gradient on the fracture statistics of quasi-brittle materials

Haiyan Li, Alex Fok

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A deterministic model with material strain-softening has been employed to predict the failure process of quasi-brittle materials subjected to different strain gradients. The failures of beams in pure bending and L-shape specimens in tension are simulated using this model, and the influence of material damage rate on the failure process is studied. The effect of statistical variations in the material properties on the fracture statistics of the components is then considered. The model correctly predicts the changes in the magnitude and distribution of the failure loads of specimens with different strain gradients. The results can help explain the influence of strain gradient on the fracture statistics of quasi-brittle materials.

Original languageEnglish (US)
Pages (from-to)136-143
Number of pages8
JournalJournal of Nuclear Materials
Volume394
Issue number2-3
DOIs
StatePublished - Nov 1 2009

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