Precursory deformation responses in different directions to catastrophic failure of uniaxially compressed sandstones
文献类型：期刊论文
| 作者 | Cheng, L.; Hao SW(郝圣旺) ; Lu, C.
|
| 刊名 | ARCHIVES OF MECHANICS
 |
| 出版日期 | 2024 |
| 卷号 | 76期号:1-2页码:39-60 |
| 关键词 | deformation time courses precursory acceleration power law singularity prediction |
| ISSN号 | 0373-2029 |
| DOI | 10.24423/aom.4378 |
| 英文摘要 | THE PRECURSORY ACCELERATION OF DEFORMATION is widely validated as a method for predicting the failure time. Damage evolution inside rocks generally results in complex strain patterns in the vicinity of failure and various responses of deformation in different directions. However, it is still unclear what the differences and similarities are during the evolution of strain components. In this paper, we compare the evolving properties of strain components in different directions based on experiments of sandstones under uniaxial compression. It is shown that the temporal patterns of vertical strains are much more complex in spatial distributions than that of horizontal strains. The horizontal strain presents two kinds of time courses characterized by precursory accelerations in both the strain localized zone and its surrounding areas, and the evolution without accelerations in positions is far from the strain localized zone. However, the vertical strain components corresponding to loading direction present complex evolving patterns with five kinds of time courses. The final amplitudes of horizontal strains are much higher than vertical components. Horizontal strains follow the power law acceleration with the well-defined exponents, but the exponents for vertical components are more scattered. Thus, horizontal strains can be applied to predict the failure time. |
| 分类号 | Q3 |
| WOS研究方向 | Mechanics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001229708800003 |
| 资助机构 | Key Research and Development Projects of Hebei Province {22375407D] ; Hebei Natural Science Foundation {D2020203001] ; National Natural Science Foundation of China {11672258] |
| 其他责任者 | Hao S |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97201]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.【Lu, C.】 Curtin Univ, Sch Civil & Mech Engn, Perth, Australia 2.【Hao, S.】 Inst Mech, Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing, Peoples R China 3.【Cheng, L. & Hao, S.】 Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, L.,Hao SW,Lu, C.. Precursory deformation responses in different directions to catastrophic failure of uniaxially compressed sandstones[J]. ARCHIVES OF MECHANICS,2024,76(1-2):39-60. |
| APA | Cheng, L.,郝圣旺,&Lu, C..(2024).Precursory deformation responses in different directions to catastrophic failure of uniaxially compressed sandstones.ARCHIVES OF MECHANICS,76(1-2),39-60. |
| MLA | Cheng, L.,et al."Precursory deformation responses in different directions to catastrophic failure of uniaxially compressed sandstones".ARCHIVES OF MECHANICS 76.1-2(2024):39-60. |
入库方式： OAI收割
来源：力学研究所
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