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 reproduced, as well as the critical loads.

Details

Title
A Modified Phase-Field Fracture Model for Simulation of Mixed Mode Brittle Fractures and Compressive Cracks in Porous Rock
Author
Spetz, Alex 1 ; Denzer Ralf 2   VIAFID ORCID Logo  ; Tudisco Erika 1   VIAFID ORCID Logo  ; Dahlblom Ola 1 

1  Lund University, Department of Construction Sciences, Facultyof Engineering, Lund, Sweden (GRID:grid.4514.4) (ISNI:0000 0001 0930 2361) 
2  Lund University, Division of Solid Mechanics, Facultyof Engineering, Lund, Sweden (GRID:grid.4514.4) (ISNI:0000 0001 0930 2361) 
Pages
5375-5388
Publication year
2021
Publication date
Oct 2021
Publisher
Springer Nature B.V.
ISSN
0723-2632
e-ISSN
1434-453X
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/s00603-021-02627-4
ProQuest document ID
2583695983
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.