Experiment and numerical simulation study of dynamic mechanical behavior of granite specimen after high temperature treatment
文献类型：期刊论文
| 作者 | Yang, Sheng-Qi1; Li, Ye1; Ma, Guo-Wei2; Sun, Bo-Wen1; Yang, Jing1; Xu, Jie1; Dai, Yong-Hao3 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 154期号:-页码:- |
| ISSN号 | 0266-352X |
| 关键词 | High temperature Dynamic mechanical properties Fractal characteristics Ultimate failure mode |
| 英文摘要 | The dynamic compression experiments were conducted on granite specimens after high-temperature treatments by using split Hopkinson pressure bar test system. Subsequently, we collected the granite fragments after impacting, and the fragmentation characteristics were evaluated by the fractal dimension and average fragment size. Finally, combined with the numerical simulation results, we investigate the law of crack propagation during dynamic compression. The results show that the change in physical properties such as bulk density and mass of granite are closely related to the temperature. Microcracking occurred on the surface of granite when the temperature is 900celcius. Dynamic peak strain and strain rate increased with the increase of temperature, while the peak strength and elastic modulus decreased. Additionally, the fractal dimension and average fragmentation size are closely related, and the relationship is negatively linear. The fractal dimension and average fragmentation size increase and decrease with the temperature, respectively. By combining the experimental and numerical results, we observed that the crack initially appears on the surface of the rock and then gradually propagates to the interior under impact loading. The rupture surface of granite fragmentation is approximately parallel to the axial direction and the ultimate failure mode mainly comprises the axial tensile splitting failure. |
| 学科主题 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000900079700001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35193]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, PR China 2.School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin, 300401, PR China 3.Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan 430071, PR China |
| 推荐引用方式 GB/T 7714 | Yang, Sheng-Qi,Li, Ye,Ma, Guo-Wei,et al. Experiment and numerical simulation study of dynamic mechanical behavior of granite specimen after high temperature treatment[J]. COMPUTERS AND GEOTECHNICS,2023,154(-):-. |
| APA | Yang, Sheng-Qi.,Li, Ye.,Ma, Guo-Wei.,Sun, Bo-Wen.,Yang, Jing.,...&Dai, Yong-Hao.(2023).Experiment and numerical simulation study of dynamic mechanical behavior of granite specimen after high temperature treatment.COMPUTERS AND GEOTECHNICS,154(-),-. |
| MLA | Yang, Sheng-Qi,et al."Experiment and numerical simulation study of dynamic mechanical behavior of granite specimen after high temperature treatment".COMPUTERS AND GEOTECHNICS 154.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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