Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics
文献类型：期刊论文
| 作者 | Du, Wenjie; Fu, Xiaodong; Sheng, Qian1; Chen, Jian; Du, Yuxiang; Zhang, Zhenping |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 240期号:-页码:21 |
| 关键词 | Rock material Improved bond-based peridynamics Compressive loading Fracture modeling Crack propagation |
| ISSN号 | 0013-7944 |
| DOI | 10.1016/j.engfracmech.2020.107315 |
| 英文摘要 | Since the consistency of the bond failure criterion in traditional bond-based peridynamics (BBPD) theory, the crack-propagation pattern of rocks under tensile and compressive loads is almost the same, however in reality the mechanisms of fractures in tensile and compression state are totally different. To solve this problem, two extensions are conducted on the basis of the traditional BB-PD to form the improved bond-based peridynamics theory (iBB-PD). First, a novel fracture-modeling method considering the actual closed state of fractures in a rock mass is proposed, which can transfer stress or waves across closed fractures. Second, by introducing the elastic-brittle-plastic constitutive model, the traditional PMB model is extended to simulate bond failure under compressive conditions. Three benchmark examples are presented to illustrate the rationale of iBB-PD. The iBB-PD theory is used to simulate the crack initiation, propagation and coalescence in rock specimens with pre-existing closed fractures under uniaxial compression, and the numerical results are in good agreement with the experimental results. The iBB-PD method proposed in this paper could extend traditional peridynamics to capture the failure process of rocks under compressive-shear stress conditions. |
| 资助项目 | International Partnership Program of Chinese Academy of Sciences[131551KYSB20180042] ; National Natural Science Foundation of China[51779250] ; National Natural Science Foundation of China[51679232] ; National Key R&D Program of China[2018YFC0809400] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000598172700005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25347]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Wenjie,Fu, Xiaodong,Sheng, Qian,et al. Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics[J]. ENGINEERING FRACTURE MECHANICS,2020,240(-):21. |
| APA | Du, Wenjie,Fu, Xiaodong,Sheng, Qian,Chen, Jian,Du, Yuxiang,&Zhang, Zhenping.(2020).Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics.ENGINEERING FRACTURE MECHANICS,240(-),21. |
| MLA | Du, Wenjie,et al."Study on the failure process of rocks with closed fractures under compressive loading using improved bond-based peridynamics".ENGINEERING FRACTURE MECHANICS 240.-(2020):21. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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