Micromechanical modeling of rate-dependent multiphysics fracture propagation
Abstract/Contents
- Abstract
- Rate-dependent behavior associated with deformation and fracturing of materials poses significant challenges for modeling. In addition to the complications of the viscoelastic response, the speed of fracture propagation reflects micromechanical mechanisms in the fracture process zone (FPZ). In order to represent these complicated behaviors, a thermodynamically consistent, rate-dependent fracture model is required. Based on rigorous thermodynamic principles, we derive a rate-dependent phase-field mechanical model coupled with single-phase fluid flow in both the matrix and the fracture. The model is guaranteed to satisfy energy conservation during fracture propagation. The model serves as a strong basis for investigating rate-dependent fracturing experiments and for making predictions of material behaviors under new conditions. In addition, we extended the model to different domains such as core-scale breakdown experiments, internal pressure-driven fractures, and multi-scale constitutive modeling. We demonstrated the accuracy of our model in different contexts by performing benchmark experiments against analytical solutions or by comparing the numerical results with experimental measurements. The multi-scale constitutive modeling framework allows us to simulate materials with microscopic fracture networks. We also presented a semi-analytical solution for fracture-matrix imbibition that does not require any tuning/matching parameters. We demonstrated that our model is capable of accurately capturing the nonlinearity of the displacement curves with very little computational cost.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2021; ©2021 |
| Publication date | 2021; 2021 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Yang, Jie, (Researcher in energy resources engineering) |
|---|---|
| Degree supervisor | Kovscek, Anthony R. (Anthony Robert) |
| Degree supervisor | Tchelepi, Hamdi |
| Thesis advisor | Kovscek, Anthony R. (Anthony Robert) |
| Thesis advisor | Tchelepi, Hamdi |
| Thesis advisor | Tartakovsky, Daniel |
| Degree committee member | Tartakovsky, Daniel |
| Associated with | Stanford University, Department of Energy Resources Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Jie Yang. |
|---|---|
| Note | Submitted to the Department of Energy Resources Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2021. |
| Location | https://purl.stanford.edu/cz774gx7589 |
Access conditions
- Copyright
- © 2021 by Jie Yang
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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