Creep-fatigue model of rock salt based on a fractal-order derivative considering thermo-mechanical damage
文献类型：期刊论文
| 作者 | Li, Hang4,5; Ma, Hongling1,2,6; Yang, Chunhe1,4,5,6; Wang, Xuan1,6; Daemen, J. J. K.3 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 174页码:17 |
| 关键词 | Rock salt Creep-fatigue Constitutive model Fractal-order derivative Thermo-mechanical damage |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106605 |
| 英文摘要 | The increasing global energy demand has propelled compressed air energy storage (CAES) into the spotlight due to its inherent environmental and efficiency advantages. In this study, triaxial creep-fatigue experiments were conducted at various temperatures to investigate how temperature influences the creep-fatigue behavior of rock salt. The results demonstrate that increasing temperature accelerates both the creep rate and overall deformation of the rock salt. Furthermore, elevated temperatures were found to exacerbate strain softening and hysteresis within the rock salt under cyclic loading conditions. Based on these experimental findings, a novel fractal-order derivative creep-fatigue damage (FDCFD) model is developed that incorporates thermo-mechanical coupling effects. This model, comprising the Burgers, Heard, and viscoplastic body, effectively captures the three-stage deformation of rock salt and strongly agrees with the experimental results. The FDCFD model is implemented as a secondary development within FLAC3D 3D and subsequently employed to simulate the deformation of a CAES salt cavern. The Norton model and the FDCFD model predicted displacements of 0.89 m and 1.04 m, respectively, after 10 years of cavern operation at the cavern waist. This difference underscores the enhanced accuracy of the FDCFD model in predicting the time-dependent deformation of salt caverns, effectively addressing the limitations inherent in Norton models, which neglect the initial deformation stages. These findings offer valuable theoretical insights and practical engineering guidance for understanding the creep-fatigue behavior of rock salt under elevated temperature conditions and assessing the stability of CAES salt caverns. |
| 资助项目 | Major Research Development Pro-gram of Hubei Province[2022BAA093] ; Major Research Development Pro-gram of Hubei Province[2022BAD163] ; Major Science and Technology Research and Development Program of Jiangxi Province[2023ACG01004] ; National Science Foundation for Excellent Young Scholars[52122403] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME023008] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001280924700001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42123]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Ma, Hongling |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 3.Univ Nevada, Mackay Sch Earth Sci & Engn, Reno, NV 89557 USA 4.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China 5.Chongqing Univ, Sch Resources & Safety Engn, Chongqing 400044, Peoples R China 6.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hang,Ma, Hongling,Yang, Chunhe,et al. Creep-fatigue model of rock salt based on a fractal-order derivative considering thermo-mechanical damage[J]. COMPUTERS AND GEOTECHNICS,2024,174:17. |
| APA | Li, Hang,Ma, Hongling,Yang, Chunhe,Wang, Xuan,&Daemen, J. J. K..(2024).Creep-fatigue model of rock salt based on a fractal-order derivative considering thermo-mechanical damage.COMPUTERS AND GEOTECHNICS,174,17. |
| MLA | Li, Hang,et al."Creep-fatigue model of rock salt based on a fractal-order derivative considering thermo-mechanical damage".COMPUTERS AND GEOTECHNICS 174(2024):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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