TY - JOUR
T1 - A Modified Phase-Field Fracture Model for Simulation of Mixed Mode Brittle Fractures and Compressive Cracks in Porous Rock
AU - Spetz, Alex
AU - Denzer, Ralf
AU - Tudisco, Erika
AU - Dahlblom, Ola
N1 - Publisher Copyright:
© 2021, The Author(s).
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - Comparison to experiments
KW - Compression driven fractures
KW - Isogeometric analysis
KW - Phase-field fracture model
KW - Porous rock
UR - http://www.scopus.com/inward/record.url?scp=85114317479&partnerID=8YFLogxK
U2 - 10.1007/s00603-021-02627-4
DO - 10.1007/s00603-021-02627-4
M3 - Article
AN - SCOPUS:85114317479
VL - 54
SP - 5375
EP - 5388
JO - Rock Mechanics and Rock Engineering
JF - Rock Mechanics and Rock Engineering
SN - 0723-2632
IS - 10
ER -