Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1007/s10338-023-00452-6 |
| Volltext | Shareable Link |
| Titel (primär) | Phase-field modeling of thermal fracture and shear heating in rocks with degraded thermal conductivity across crack |
| Autor | You, T.
; Zhu, Q.; Li, W.; Shao, J. |
| Quelle | Acta Mechanica Solida Sinica |
| Erscheinungsjahr | 2024 |
| Department | ENVINF |
| Band/Volume | 37 |
| Seite von | 711 |
| Seite bis | 726 |
| Sprache | englisch |
| Topic | T8 Georesources T5 Future Landscapes |
| Supplements | Supplement 1 |
| Keywords | Phase-field; Micromechanics; Heat transfer; Thermal conductivity degradation; Shear heating |
| Abstract | By incorporating two different fracture mechanisms and salient unilateral effects in rock materials, we propose a thermomechanical phase-field model to capture thermally induced fracture and shear heating in the process of rock failure. The heat conduction equation is derived, from which the plastic dissipation is treated as a heat source. We then ascertain the effect of the non-associated plastic flow on frictional dissipation and show how it improves the predictive capability of the proposed model. Taking advantage of the multiscale analysis, we propose a phase-field-dependent thermal conductivity with considering the unilateral effect of fracture. After proposing a robust algorithm for solving involved three-field coupling and damage-plasticity coupling problems, we present three numerical examples to illustrate the abilities of our proposed model in capturing various thermo-mechanically coupled behaviors. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=28911 |
| You, T., Zhu, Q., Li, W., Shao, J. (2024): Phase-field modeling of thermal fracture and shear heating in rocks with degraded thermal conductivity across crack Acta Mech. Solida Sin. 37 , 711 - 726 10.1007/s10338-023-00452-6 |
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