Fatigue of granite subjected to cyclic loading at various temperatures: experimental insights from deformation and energy conversion
文献类型：期刊论文
| 作者 | Zhao, Guokai; Chang, Xin; Guo, Yintong; Yang, Hanzhi; Guo, Wuhao; Hu, Yaoqing |
| 刊名 | GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 8期号:2 |
| 关键词 | Granite Temperature Cyclic loading Deformation Energy Brittleness index |
| ISSN号 | 2363-8419 |
| 英文摘要 | Rocks in many high-temperature underground engineering applications experience complex stress disturbances, which greatly affect their performance. However, the influence of combining the temperature and fatigue loading on the deformation characteristics of granite has rarely been investigated. In this study, multi-level multi cyclic loading tests were carried out on granite samples over the temperature range of 25-600 degrees C, revealing the influence of temperature, stress level and number of cycles on the deformation characteristics and energy conversion characteristics. The results show that the deformation behavior of granite under fatigue loading at high temperature is different from that at room temperature. It can be divided into three stages, hardening stage (Stage I), transition stage (Stage II) and softening stage (Stage III), which may be applicable to evaluate the deformation of deep rocks under complex geological conditions. A linear energy storage law that is independent of temperature and loading history was observed. A new calculation method for elastic energy at the peak stress was introduced to modify the traditional method based on the assumption of equivalent elastic modulus at the loading and unloading stage, which can provide a more reasonable and reliable estimate of rock brittleness. The experimental results of this study have important theoretical significance and engineering value for long-term stability evaluation and disaster prediction. |
| 学科主题 | Energy & Fuels ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000771460000001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35156]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chongqing University; 3.Taiyuan University of Technology |
| 推荐引用方式 GB/T 7714 | Zhao, Guokai,Chang, Xin,Guo, Yintong,et al. Fatigue of granite subjected to cyclic loading at various temperatures: experimental insights from deformation and energy conversion[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2022,8(2). |
| APA | Zhao, Guokai,Chang, Xin,Guo, Yintong,Yang, Hanzhi,Guo, Wuhao,&Hu, Yaoqing.(2022).Fatigue of granite subjected to cyclic loading at various temperatures: experimental insights from deformation and energy conversion.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,8(2). |
| MLA | Zhao, Guokai,et al."Fatigue of granite subjected to cyclic loading at various temperatures: experimental insights from deformation and energy conversion".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 8.2(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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