Asymptotic Modelling of Fractures with Constricted Opening

Research output: Chapter in Book/Conference paperConference paperpeer-review

Abstract

Fractures in geomaterials do not grow as a continuous surface as they are affected by local interruptions and overlapping. These form bridges which being distributed all over the fracture constrict its opening. The effect of the distributed bridges is modelled by an equivalent Winkler layer whose stiffness represents the total bridge stiffness per unit area of the fracture. The paper develops approximate expressions for the stress intensity factors and volume (area in 2D) of fracture opening under uniform tensile load based on interpolating between the asymptotics of small and large fractures. A case of growth of a fracture with constricted opening under displacement-control loading is analysed. The presented results can be important in modelling of fracture propagation in heterogenous materials.

Original languageEnglish
Title of host publicationMultiscale Processes of Instability, Deformation and Fracturing in Geomaterials - Proceedings of 12th International Workshop on Bifurcation and Degradation in Geomechanics
EditorsElena Pasternak, Arcady Dyskin
PublisherSpringer Science + Business Media
Pages136-143
Number of pages8
ISBN (Print)9783031222122
DOIs
Publication statusPublished - 2023
Event12th International Workshop on Bifurcation and Degradation in Geomechanics - Perth, Australia
Duration: 28 Nov 20221 Dec 2022

Publication series

NameSpringer Series in Geomechanics and Geoengineering
ISSN (Print)1866-8755
ISSN (Electronic)1866-8763

Conference

Conference12th International Workshop on Bifurcation and Degradation in Geomechanics
Abbreviated titleIWBDG 2022
Country/TerritoryAustralia
CityPerth
Period28/11/221/12/22

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