Mechanism Interpretation of Sub-critical Crack Growth in Beishan Granite Subjected to Cyclic Loading
文献类型：期刊论文
| 作者 | Miao, Shuting1,2; Pan, Peng-Zhi1,2; Wang, Zhaofeng1,2; Feng, Yujie1,2; Zheng, Qingsong1,2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2023-07-26 |
| 页码 | 18 |
| 关键词 | Cyclic loading Fatigue mechanism Acoustic emission Deformation localization Sub-critical crack growth |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-023-03467-0 |
| 英文摘要 | A series of stepwise cyclic tests and short-term creep tests were conducted on Beishan granite to quantify the separated effect of stress corrosion and friction degradation during cyclic loading. An opti-acoustic monitoring platform that combined digital image correlation and acoustic emission techniques was utilized to monitor the rock deformation and fracturing at both the micro- and macro-scale simultaneously. In addition, a micromechanical model was built to study the crack growth of rocks exposed to cyclic and creep loads. Experimental and theoretical results indicated that both the repeated and constant loads play a great role in deformation localization, micro-fracturing, and damage accumulation. A similar law was observed in the evolution of the AE b value and distribution of frequency-amplitude in granite under cyclic and creep loading. However, cyclic loads induced a greater AE count rate in granite than constant loads at low loading levels, while constant loads stimulated a greater AE count rate than cyclic loads at high loading levels. Moreover, cyclic loads promoted more strain localization bands than constant load; so, more macro-cracks, branching, and debris were observed in granite during cyclic loading. These similarities and differences indicated that both the stress corrosion and fatigue mechanisms were highlighted to be responsible for the sub-critical crack growth of rocks during cyclic loading. The development of sub-critical crack growth and the evolution of stress intensity factor at the crack tip within rocks under cyclic and constant loads were well described by the micromechanical theoretical model. |
| 资助项目 | National Natural Science Foundation of China[52125903] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001034214500002 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39036]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pan, Peng-Zhi |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Miao, Shuting,Pan, Peng-Zhi,Wang, Zhaofeng,et al. Mechanism Interpretation of Sub-critical Crack Growth in Beishan Granite Subjected to Cyclic Loading[J]. ROCK MECHANICS AND ROCK ENGINEERING,2023:18. |
| APA | Miao, Shuting,Pan, Peng-Zhi,Wang, Zhaofeng,Feng, Yujie,&Zheng, Qingsong.(2023).Mechanism Interpretation of Sub-critical Crack Growth in Beishan Granite Subjected to Cyclic Loading.ROCK MECHANICS AND ROCK ENGINEERING,18. |
| MLA | Miao, Shuting,et al."Mechanism Interpretation of Sub-critical Crack Growth in Beishan Granite Subjected to Cyclic Loading".ROCK MECHANICS AND ROCK ENGINEERING (2023):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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