Mechanical behavior and failure mechanisms of cylindrical and prismatic rock specimens under various confining stresses
文献类型：期刊论文
| 作者 | Zheng, Zhi1,2,3; Su, Guoshao3; Jiang, Quan1; Pan, Pengzhi1; Huang, Xiaohua3; Jiang, Jianqing2,3 |
| 刊名 | INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
 |
| 出版日期 | 2022-02-25 |
| 页码 | 18 |
| 关键词 | Prismatic and cylindrical rock specimens triaxial compression mechanical properties failure behavior micromechanism |
| ISSN号 | 1056-7895 |
| DOI | 10.1177/10567895221083997 |
| 英文摘要 | Although cylindrical and prismatic specimens are often used in laboratory tests, the differences between their deformation and failure characteristics remain unclear. Cylindrical and prismatic specimens of two rocks (marble and granite) were analyzed under various conventional triaxial conditions. The failed prismatic specimens exhibit multiple fractures intersecting in the cross section. With increasing confining pressure, the failure mode of the prismatic specimen changes from tensile failure to shear failure. In the progressive failure process of prismatic specimens, the two lateral strains epsilon(2) and epsilon(3) are the same before the peak, but some differences arise after some degree of post-peak failure, where the acoustic emission (AE) activity clearly increases. The mechanical parameters (peak strength, internal friction angle, cohesion, Young's modulus, and Poisson's ratio) determined for the cylindrical and prismatic specimens are consistent. However, a significant difference in the fracture morphology exists among them, even with similar change trends in the tensile-shear failure mode with confining pressure. |
| 资助项目 | National Natural Science Foundation of China[52109119] ; National Natural Science Foundation of China[52169021] ; National Natural Science Foundation of China[52069003] ; Guangxi Natural Science Foundation[2021GXNSFBA075030] ; Guangxi Science and Technology Project ; High Level Innovation Team and Outstanding Scholar Program of Universities in Guangxi province[202006] |
| WOS研究方向 | Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000762946900001 |
| 出版者 | SAGE PUBLICATIONS LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34518]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zheng, Zhi |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 2.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang, Peoples R China 3.Guangxi Univ, Coll Civil Engn & Architecture, Guangxi Key Lab Disaster Prevent & Engn Safety, Key Lab Disaster Prevent & Struct Safety,Minist E, Nanning 530004, Guangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Zhi,Su, Guoshao,Jiang, Quan,et al. Mechanical behavior and failure mechanisms of cylindrical and prismatic rock specimens under various confining stresses[J]. INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,2022:18. |
| APA | Zheng, Zhi,Su, Guoshao,Jiang, Quan,Pan, Pengzhi,Huang, Xiaohua,&Jiang, Jianqing.(2022).Mechanical behavior and failure mechanisms of cylindrical and prismatic rock specimens under various confining stresses.INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,18. |
| MLA | Zheng, Zhi,et al."Mechanical behavior and failure mechanisms of cylindrical and prismatic rock specimens under various confining stresses".INTERNATIONAL JOURNAL OF DAMAGE MECHANICS (2022):18. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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