A novel damaged-based numerical manifold method to simulate the failure process of brittle rocks from damage evolution to crack initiation, propagation and coalescence
文献类型：期刊论文
| 作者 | Cao, Yongsheng3; Yu, Qinglei3; Zhou, Guanglei1; Yu, Xianyang2; Xu, Xiaodong3; Liu, Kai3 |
| 刊名 | ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 155期号:-页码:452 |
| ISSN号 | 0955-7997 |
| 关键词 | Numerical manifold method Damage and fracture behavior Heterogeneity Crack initiation Crack evolution technique |
| 英文摘要 | In addition to macroscopic crack propagation and coalescence, the nonlinear deformation of rocks also includes mesoscopic damage buildup and transformation to macroscopic crack. To accurately model the progressive failure process of rocks, a novel damage-based numerical manifold method (NMM) is proposed in this study. The damaged-based NMM incorporates the Weibull statistical distribution, and the exponential function material softening model to describe damage evolution and strength reduction of heterogeneous material. When the damage accumulation of adjacent manifold elements satisfies the failure threshold, a real macroscopic crack is initiated from these two manifold elements, accompanied by cutting off these two manifold elements. The Mohr -Coulomb criterion with a tension cut-off was used to evaluate fracture modes of cracks. To verify the proposed method, a series of numerical tests were conducted and the numerical results were compared with laboratory experiments and other numerical results. On this basis, the effect of heterogeneity on the failure process in rock specimens with a single crack is clarified. Results from this study show that the simulations satisfactorily capture the failure process of brittle rocks from damage evolution to crack initiation, propagation, coalescence and large displacement, implying that the method is an appropriate and robust tool to model the damage and fracture behavior of rocks. |
| 学科主题 | Engineering ; Mathematics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:001029872500001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35150]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China 2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 3.Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang, Liaoning 110819, China |
| 推荐引用方式 GB/T 7714 | Cao, Yongsheng,Yu, Qinglei,Zhou, Guanglei,et al. A novel damaged-based numerical manifold method to simulate the failure process of brittle rocks from damage evolution to crack initiation, propagation and coalescence[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2023,155(-):452. |
| APA | Cao, Yongsheng,Yu, Qinglei,Zhou, Guanglei,Yu, Xianyang,Xu, Xiaodong,&Liu, Kai.(2023).A novel damaged-based numerical manifold method to simulate the failure process of brittle rocks from damage evolution to crack initiation, propagation and coalescence.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,155(-),452. |
| MLA | Cao, Yongsheng,et al."A novel damaged-based numerical manifold method to simulate the failure process of brittle rocks from damage evolution to crack initiation, propagation and coalescence".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 155.-(2023):452. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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