Effect of strain rate on the fracture behavior of granite under unconfined compression: A meso-scale energy evolution perspective
文献类型：期刊论文
| 作者 | Liang, Qinyuan4; Lan, Hengxing4,5; Zhou, Yu3,6; Li, Langping5; Bao, Han2; Liu, Shijie4; Li, Bo1 |
| 刊名 | UNDERGROUND SPACE
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 25页码:176-194 |
| 关键词 | Granite Strain rate effect mechanisms Meso-scale Crack propagation Energy evolution |
| ISSN号 | 2096-2754 |
| DOI | 10.1016/j.undsp.2025.05.009 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The macro mechanical behavior of rock material is attributed to the meso/mineral characteristics. To deeply reveal the mechanisms of strain rate effect on mechanical properties and crack propagation, a series of unconfined compression experiments and simulations for exploring the meso-scale characteristic were conducted at different strain rates. Based on the micro-loading equipment with microphotography capabilities and the numerical grain-based model method, the meso-scale crack propagation and energy evolution characteristics of granite during the pre-peak loading process were analyzed. The results indicate that with the increase of strain rate, the crack distribution entropy value increases, which means that cracks are more evenly distributed among various minerals. The differences in stored elastic strain energy among different minerals decrease, resulting in more uniform energy release. In addition, cracks associated with biotite transits from intergranular to transgranular modes. Therefore, the increased strain rate can prompt more minerals to participate in deformation, thereby enhancing the mechanical properties. This study deeply reveals the mechanisms of strain rate on granite crack propagation at the meso-scale, offering valuable insights for the stability and safety of underground space engineering. |
| URL标识 | 查看原文 |
| WOS关键词 | CRACK-PROPAGATION ; ROCK ; FAILURE ; DAMAGE ; STRENGTH ; CRITERIA ; SLOPE |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001600665800001 |
| 出版者 | KEAI PUBLISHING LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217698]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Lan, Hengxing |
| 作者单位 | 1.Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China; 2.Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China; 3.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Peoples R China 4.Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Albania; 6.Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liang, Qinyuan,Lan, Hengxing,Zhou, Yu,et al. Effect of strain rate on the fracture behavior of granite under unconfined compression: A meso-scale energy evolution perspective[J]. UNDERGROUND SPACE,2025,25:176-194. |
| APA | Liang, Qinyuan.,Lan, Hengxing.,Zhou, Yu.,Li, Langping.,Bao, Han.,...&Li, Bo.(2025).Effect of strain rate on the fracture behavior of granite under unconfined compression: A meso-scale energy evolution perspective.UNDERGROUND SPACE,25,176-194. |
| MLA | Liang, Qinyuan,et al."Effect of strain rate on the fracture behavior of granite under unconfined compression: A meso-scale energy evolution perspective".UNDERGROUND SPACE 25(2025):176-194. |
入库方式： OAI收割
来源：地理科学与资源研究所
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