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An SBFEM-Based Model for Hydraulic Fracturing in Quasi-Brittle Materials

An SBFEM-Based Model for Hydraulic Fracturing in Quasi-Brittle Materials Abstract A numerical model based on the scaled boundary finite element method is developed to simulate the hydraulic fracturing in concrete-like quasi-brittle materials using cohesive interface elements. The shadow domain method developed previously (Yang and Deeks in Eng Fract Mech 143(4):333–354, 2007) is extended to consider crack-width-dependent hydraulic pressure and cohesive traction, so that the stress intensity factors caused by both crack-face forces are semi-analytically calculated separately in the same way. The crack propagation is determined by the criterion of \(K_\mathrm{I} \geqslant { \mathrm 0}\), and the propagation direction by the linear elastic fracture mechanics criteria. Two examples of concrete structures are modeled, and the results are in good agreement with the experimental data and others numerical results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Acta Mechanica Solida Sinica" Springer Journals

An SBFEM-Based Model for Hydraulic Fracturing in Quasi-Brittle Materials

"Acta Mechanica Solida Sinica" , Volume 31 (4): 17 – Aug 1, 2018

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References (37)

Publisher
Springer Journals
Copyright
2018 The Chinese Society of Theoretical and Applied Mechanics and Technology
ISSN
0894-9166
eISSN
1860-2134
DOI
10.1007/s10338-018-0029-3
Publisher site
See Article on Publisher Site

Abstract

Abstract A numerical model based on the scaled boundary finite element method is developed to simulate the hydraulic fracturing in concrete-like quasi-brittle materials using cohesive interface elements. The shadow domain method developed previously (Yang and Deeks in Eng Fract Mech 143(4):333–354, 2007) is extended to consider crack-width-dependent hydraulic pressure and cohesive traction, so that the stress intensity factors caused by both crack-face forces are semi-analytically calculated separately in the same way. The crack propagation is determined by the criterion of \(K_\mathrm{I} \geqslant { \mathrm 0}\), and the propagation direction by the linear elastic fracture mechanics criteria. Two examples of concrete structures are modeled, and the results are in good agreement with the experimental data and others numerical results.

Journal

"Acta Mechanica Solida Sinica"Springer Journals

Published: Aug 1, 2018

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