FRACTURE THEORY FOR NONHOMOGENEOUS BRITTLE MATERIALS WITH APPLICATION TO ICE.

Zdenek P Bazant*, Jin Keun Kim

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Brittle heterogeneous materials generally fracture with a dispersed zone of microcracking at the fracture front. The deformation and failure of these materials can be described by a nonlocal continuum theory, the special case of which is the blunt crack band model, in which a band of continuously distributed (smeared) cracks of a certain fixed width is assumed to exist at the fracture front. This model is easily implemented in finite element codes, and a dimensional analysis leads to a simple size effect law for the nominal stress at failure of geometrically similar specimens. The current state of this theory, which has been shown to apply to concrete and rocks, is briefly outlined and the possibility of application to ice is discussed. Comparison with a large series of test data by Butiagin suggests that nonlinear fracture mechanics based on the crack band model may indeed be applicable to ice.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherASCE
Pages917-930
Number of pages14
ISBN (Print)0872624412
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Engineering(all)

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