دورية أكاديمية
A Statistical Damage Constitutive Model of Anisotropic Rock: Development and Validation
| العنوان: | A Statistical Damage Constitutive Model of Anisotropic Rock: Development and Validation |
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| المؤلفون: | Tenglong Rong, Can Guan, Keliu Liu, Shuai Heng, Wenlong Shen, Ruiyong Mou |
| المصدر: | Geofluids, Vol 2021 (2021) |
| بيانات النشر: | Hindawi-Wiley, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Geology |
| مصطلحات موضوعية: | Geology, QE1-996.5 |
| الوصف: | The damage constitutive model is of great significance to research the stress-strain relationship and damage evolution of rock under loading in engineering. In order to investigate the effect of anisotropic characteristic on the stress-strain relationship and damage evolution, a statistical damage constitutive model of anisotropic rock under true triaxial condition was developed. In this study, the plane which existed perpendicular to the coordinate axis was extracted from representative volume element (RVE) of rock. The extracted plane was assumed to be composed of abundant mesoscopic elements whose failure strength satisfied the Weibull distribution. According to the number of failure elements on the plane in each direction under loading, the anisotropic damage variable was established based on the proposed concept of areal damage. A statistical damage constitutive model of anisotropic rock was developed by using strain equivalent hypothesis and generalized Hooke constitutive model. Subsequently, the parameters in the anisotropic damage constitutive model were determined by the method of total differential. Thus, the damage evolution of anisotropic rock under various stress conditions can be conveniently evaluated by the anisotropic damage model. The model was validated based on the tests of rocks under the stress conditions of conventional triaxial and true triaxial, respectively. Moreover, for the purpose of studying the influence of parameters on the model, sensitivity analyses of mechanical parameters and model parameters were carried out. The results of statistical damage constitutive clearly demonstrate the stress-strain and damage evolution of anisotropic rock under various stress conditions. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1468-8115 1468-8123 |
| Relation: | https://doaj.org/toc/1468-8115; https://doaj.org/toc/1468-8123 |
| DOI: | 10.1155/2021/6307895 |
| URL الوصول: | https://doaj.org/article/70570192f0c847c1a2573a1523f9c3b9 |
| رقم الأكسشن: | edsdoj.70570192f0c847c1a2573a1523f9c3b9 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14688115 14688123 |
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| DOI: | 10.1155/2021/6307895 |