Full-stage creep model for deeply buried soft rock based on fractional order differential and Perzyna overstress function
文献类型：期刊论文
| 作者 | Yang, Liu; Zhou, Hui; Liu, Rongfei; Yang, Fanjie; Zhang, Chuanqing; Liu, Wenbo; Iqbal, Sayed Muhammad |
| 刊名 | MECHANICS OF TIME-DEPENDENT MATERIALS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 27期号:2页码:321 |
| 关键词 | Deeply buried soft rock Stable creep Fractional order differential Fractional exponent Accelerated creep Perzyna overstress function |
| ISSN号 | 1385-2000 |
| 英文摘要 | Aiming at the problem that conventional rock creep constitutive models are unable to precisely describe the mechanical characteristics of the entire creep growth process, this paper proposes an FBNVP model (the fractional order differential Burgers model and the nonlinear viscoplastic model in series) that is capable of fully characterizing the creep features of deeply buried soft rocks. The fractional order differential theory is utilized to enhance the viscous element's ability to accurately depict the nonlinear growth process during the stable creep stage. The nonlinear viscoplastic element is constructed based on exponential equation to precisely describe the accelerated growth process of creep stage III. The three-dimensional constitutive equations of the model under viscoplastic conditions are accurately expressed using the Perzyna overstress function. The model is validated using indoor uniaxial and triaxial creep tests on the chlorite schist of Jinping II hydropower station. The results confirm the accuracy of both the one-dimensional and three-dimensional analytical solutions of the model, demonstrating its ability to accurately describe deeply buried soft rocks' creep characteristics and having less parameters, clear physical meaning, and wide applicability compared to conventional models. These findings provide reliable theoretical support for the creep analysis of deeply buried soft rocks. |
| 学科主题 | Mechanics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001007630000001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34710]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Yang, Liu,Zhou, Hui,Liu, Rongfei,et al. Full-stage creep model for deeply buried soft rock based on fractional order differential and Perzyna overstress function[J]. MECHANICS OF TIME-DEPENDENT MATERIALS,2023,27(2):321. |
| APA | Yang, Liu.,Zhou, Hui.,Liu, Rongfei.,Yang, Fanjie.,Zhang, Chuanqing.,...&Iqbal, Sayed Muhammad.(2023).Full-stage creep model for deeply buried soft rock based on fractional order differential and Perzyna overstress function.MECHANICS OF TIME-DEPENDENT MATERIALS,27(2),321. |
| MLA | Yang, Liu,et al."Full-stage creep model for deeply buried soft rock based on fractional order differential and Perzyna overstress function".MECHANICS OF TIME-DEPENDENT MATERIALS 27.2(2023):321. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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