Details
| Original language | English |
|---|---|
| Article number | 105907 |
| Journal | International Journal of Rock Mechanics and Mining Sciences |
| Volume | 183 |
| Early online date | 27 Sept 2024 |
| Publication status | Published - Nov 2024 |
Abstract
Thermally induced fracture is a common phenomenon for concrete and rock-like materials, which presents a significant challenge to numerical modelling. In this work, a thermo-mechanical model for mixed-mode fracture based on phase-field method is proposed. This approach overcomes the difficulties of modelling the thermally induced cracking process when it comes to complex fracture patterns. To simulate different failure modes in thermo-mechanical conditions, the model's constitutive expression includes a unified failure criterion that takes into account both tensile and shear strengths. The proposed formulation provides a length scale insensitive response for brittle materials such as rocks, although other prevalent phase-field theories for purely mechanical fracture can also be involved. The computational results of the representative examples for rock-like materials are highly consistent with prior findings. It demonstrates that the presented model can effectively reproduce the thermally induced cracking process for various cracking patterns, such as tensile, shear, and tensile-shear fractures, indicating the method's remarkable capabilities for further research.
Keywords
- Brittle materials, Mixed-mode fractures, Phase-field model, Rock-like materials, Thermally induced damage
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
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In: International Journal of Rock Mechanics and Mining Sciences, Vol. 183, 105907, 11.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A thermo-mechanical phase-field model for mixed-mode fracture and its application in rock-like materials
AU - Yue, Qiang
AU - Wang, Qiao
AU - Rabczuk, Timon
AU - Zhou, Wei
AU - Zhuang, Xiaoying
AU - Chang, Xiaolin
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024/11
Y1 - 2024/11
N2 - Thermally induced fracture is a common phenomenon for concrete and rock-like materials, which presents a significant challenge to numerical modelling. In this work, a thermo-mechanical model for mixed-mode fracture based on phase-field method is proposed. This approach overcomes the difficulties of modelling the thermally induced cracking process when it comes to complex fracture patterns. To simulate different failure modes in thermo-mechanical conditions, the model's constitutive expression includes a unified failure criterion that takes into account both tensile and shear strengths. The proposed formulation provides a length scale insensitive response for brittle materials such as rocks, although other prevalent phase-field theories for purely mechanical fracture can also be involved. The computational results of the representative examples for rock-like materials are highly consistent with prior findings. It demonstrates that the presented model can effectively reproduce the thermally induced cracking process for various cracking patterns, such as tensile, shear, and tensile-shear fractures, indicating the method's remarkable capabilities for further research.
AB - Thermally induced fracture is a common phenomenon for concrete and rock-like materials, which presents a significant challenge to numerical modelling. In this work, a thermo-mechanical model for mixed-mode fracture based on phase-field method is proposed. This approach overcomes the difficulties of modelling the thermally induced cracking process when it comes to complex fracture patterns. To simulate different failure modes in thermo-mechanical conditions, the model's constitutive expression includes a unified failure criterion that takes into account both tensile and shear strengths. The proposed formulation provides a length scale insensitive response for brittle materials such as rocks, although other prevalent phase-field theories for purely mechanical fracture can also be involved. The computational results of the representative examples for rock-like materials are highly consistent with prior findings. It demonstrates that the presented model can effectively reproduce the thermally induced cracking process for various cracking patterns, such as tensile, shear, and tensile-shear fractures, indicating the method's remarkable capabilities for further research.
KW - Brittle materials
KW - Mixed-mode fractures
KW - Phase-field model
KW - Rock-like materials
KW - Thermally induced damage
UR - http://www.scopus.com/inward/record.url?scp=85204933610&partnerID=8YFLogxK
U2 - 10.1016/j.ijrmms.2024.105907
DO - 10.1016/j.ijrmms.2024.105907
M3 - Article
AN - SCOPUS:85204933610
VL - 183
JO - International Journal of Rock Mechanics and Mining Sciences
JF - International Journal of Rock Mechanics and Mining Sciences
SN - 1365-1609
M1 - 105907
ER -