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A Modified Phase-Field Fracture Model for Simulation of Mixed Mode Brittle Fractures and Compressive Cracks in Porous Rock

Spetz, Alex LU ; Denzer, Ralf LU ; Tudisco, Erika LU orcid and Dahlblom, Ola LU (2021) In Rock Mechanics and Rock Engineering 54(10). p.5375-5388
Abstract

In this work, we propose a modified phase-field model for simulating the evolution of mixed mode fractures and compressive driven fractures in porous artificial rocks. For the purpose of validation, the behaviour of artificial rock samples, with either a single or double saw cuts, under uniaxial plane strain compression has been numerically simulated. The simulated results are compared to experimental data, both qualitatively and quantitatively. It is shown that the proposed model is able to capture the commonly observed propagation pattern of wing cracks emergence followed by secondary cracks driven by compressive stresses. Additionally, the typical types of complex crack patterns observed in experimental tests are successfully... (More)

In this work, we propose a modified phase-field model for simulating the evolution of mixed mode fractures and compressive driven fractures in porous artificial rocks. For the purpose of validation, the behaviour of artificial rock samples, with either a single or double saw cuts, under uniaxial plane strain compression has been numerically simulated. The simulated results are compared to experimental data, both qualitatively and quantitatively. It is shown that the proposed model is able to capture the commonly observed propagation pattern of wing cracks emergence followed by secondary cracks driven by compressive stresses. Additionally, the typical types of complex crack patterns observed in experimental tests are successfully reproduced, as well as the critical loads.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Comparison to experiments, Compression driven fractures, Isogeometric analysis, Phase-field fracture model, Porous rock
in
Rock Mechanics and Rock Engineering
volume
54
issue
10
pages
5375 - 5388
publisher
Springer
external identifiers
  • scopus:85114317479
ISSN
0723-2632
DOI
10.1007/s00603-021-02627-4
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
id
01566ac1-99e1-4a00-b6e9-99582e4079f9
date added to LUP
2021-09-21 11:59:53
date last changed
2025-04-04 14:13:17
@article{01566ac1-99e1-4a00-b6e9-99582e4079f9,
  abstract     = {{<p>In this work, we propose a modified phase-field model for simulating the evolution of mixed mode fractures and compressive driven fractures in porous artificial rocks. For the purpose of validation, the behaviour of artificial rock samples, with either a single or double saw cuts, under uniaxial plane strain compression has been numerically simulated. The simulated results are compared to experimental data, both qualitatively and quantitatively. It is shown that the proposed model is able to capture the commonly observed propagation pattern of wing cracks emergence followed by secondary cracks driven by compressive stresses. Additionally, the typical types of complex crack patterns observed in experimental tests are successfully reproduced, as well as the critical loads.</p>}},
  author       = {{Spetz, Alex and Denzer, Ralf and Tudisco, Erika and Dahlblom, Ola}},
  issn         = {{0723-2632}},
  keywords     = {{Comparison to experiments; Compression driven fractures; Isogeometric analysis; Phase-field fracture model; Porous rock}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{5375--5388}},
  publisher    = {{Springer}},
  series       = {{Rock Mechanics and Rock Engineering}},
  title        = {{A Modified Phase-Field Fracture Model for Simulation of Mixed Mode Brittle Fractures and Compressive Cracks in Porous Rock}},
  url          = {{http://dx.doi.org/10.1007/s00603-021-02627-4}},
  doi          = {{10.1007/s00603-021-02627-4}},
  volume       = {{54}},
  year         = {{2021}},
}