A Virtual Crack-Based Numerical Manifold Approach to Crack Initiation, Propagation and Coalescence in Granite
文献类型：期刊论文
| 作者 | Yu, Xian-yang1,2; Xu, Tao1; Heap, Michael J.3,4; Heng, Zhen1; Zhu, Wancheng1; Zhou, Guanglei5; Su, Boyi1 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 55期号:12页码:7791 |
| 关键词 | Numerical manifold method Crack initiation and propagation Subcritical crack growth Weibull distribution Virtual crack |
| ISSN号 | 0723-2632 |
| 英文摘要 | Crack initiation, propagation, and coalescence are important for the understanding of rock mass behavior. In this paper, we use an improved numerical manifold method (NMM) that can stimulate the initiation, propagation, and coalescence of many cracks simultaneously to model the continuous-discontinuous deformation of granite under uniaxial and confined compression. This new simulation method couples subcritical crack growth (SCG) theory and the Mohr-Coulomb strength criterion with tension cut-off to consider the propagation of virtual and real cracks, respectively, and uses a statistical Weibull distribution to study the influence of elastic modulus inhomogeneity on crack propagation and rock failure. The mechanical behavior and failure modes of the models are in good agreement with experimental data. Increasing elastic modulus inhomogeneity decreases strength and the strain required for macroscopic failure. The stress corrosion index (n) and crack growth constant (C) also have a strong influence on uniaxial compressive strength. Indeed, higher values of C and n result in faster virtual crack speeds, a lower uniaxial compressive strength, and a lower axial strain upon failure. Confining pressure also exerts an influence on crack propagation, compressive strength, and failure mode. Our study shows that the improved NMM code combined with the virtual crack model is therefore an effective and reliable method to simulate crack initiation, propagation, and coalescence in granite under uniaxial and confined compression. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000854685700002 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35545]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang 110819, China 2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.Université de Strasbourg, CNRS, Institut Terre et Environnement de Strasbourg, UMR 7063, 5 rue René Descartes, 67084 Strasbourg, France 4.Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris, France 5.College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao Shandong 266590, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Yu, Xian-yang,Xu, Tao,Heap, Michael J.,et al. A Virtual Crack-Based Numerical Manifold Approach to Crack Initiation, Propagation and Coalescence in Granite[J]. ROCK MECHANICS AND ROCK ENGINEERING,2022,55(12):7791. |
| APA | Yu, Xian-yang.,Xu, Tao.,Heap, Michael J..,Heng, Zhen.,Zhu, Wancheng.,...&Su, Boyi.(2022).A Virtual Crack-Based Numerical Manifold Approach to Crack Initiation, Propagation and Coalescence in Granite.ROCK MECHANICS AND ROCK ENGINEERING,55(12),7791. |
| MLA | Yu, Xian-yang,et al."A Virtual Crack-Based Numerical Manifold Approach to Crack Initiation, Propagation and Coalescence in Granite".ROCK MECHANICS AND ROCK ENGINEERING 55.12(2022):7791. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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