| Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite | |
Yue Zhongwen1; Zhou Jun1; Feng C(冯春)2 ; Li Akang1; Qiu Peng1; Gang Mingwei1
| |
| 通讯作者 | Zhou, Jun(jzhou91@163.com) |
| 发表期刊 | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
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| 2021-04-13 | |
| 页码 | 14 |
| ISSN | 8756-758X |
| 摘要 | A numerical study is conducted using the improved continuum-based discrete element method (CDEM) to investigate the effect of holes on the dynamic fracturing of multi-flawed rocks. The specimen geometries contain a perpendicular crack-like flaw, a hole-like flaw, and an inclined crack-like flaw. A fracture model is implemented into the improved CDEM that combines the nonlinear pressure-dependent shear strength and tensile strength of rocks. The digital image correlation method combined with ultra-high-speed photography is applied in a split Hopkinson pressure bar system to verify the accuracy of the proposed model. The experimental results show that the improved CDEM accurately reproduces dynamic crack behavior in rocks. The simulation results show that hole-like flaws significantly affect crack behavior compared with the two investigated crack-like flaws. However, this effect gradually weakens with increasing loading stresses. This study provides important insight into the dynamic fracturing of multi-flawed rocks. |
| 关键词 | continuum‐ based discrete element method crack flawed rock split Hopkinson pressure bar system |
| DOI | 10.1111/ffe.13474 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000639594000001 |
| WOS研究方向 | Engineering ; Materials Science |
| WOS类目 | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| 资助项目 | National Natural Science Foundation of China[51974318] |
| 项目资助者 | National Natural Science Foundation of China |
| 论文分区 | 二类/Q1 |
| 力学所作者排名 | 3 |
| RpAuthor | Zhou, Jun |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/86435 |
| 专题 | 流固耦合系统力学重点实验室 |
| 作者单位 | 1.China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yue Zhongwen,Zhou Jun,Feng C,et al. Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2021:14. |
| APA | Yue Zhongwen,Zhou Jun,冯春,Li Akang,Qiu Peng,&Gang Mingwei.(2021).Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,14. |
| MLA | Yue Zhongwen,et al."Numerical investigation of the effect of holes on dynamic fracturing in multi-flawed granite".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2021):14. |
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| Jp2021F181.pdf（3255KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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