Fracture mechanics of methane clathrate hydrates
文献类型：期刊论文
| 作者 | Liu, Jinjie; Xu, Ke; Yang, Li; Lin, Yanwen; Li, Tong; Gao, Xuezheng; Zhang, Zhisen; Wu, Jianyang |
| 刊名 | ACTA MECHANICA SINICA
 |
| 出版日期 | 2021 |
| 关键词 | GAS HYDRATE STATE DEFORMATION TEMPERATURE PERSPECTIVE SIMULATION CLIMATE SINGLE CRACK TIP |
| 英文摘要 | Fundamental mechanics of gas hydrates is of importance to evaluating geomechanical and geotechnical properties of gas hydrate deposits, but it remains largely unexplored yet due to insufficient direct experimental techniques and high-quality of gas hydrate samples. Here, classic molecular dynamic (MD) simulations are used to study the fracture mechanics of three main methane clathrate hydrates of sI, sH and sH types. The results show that the mechanical properties of those three methane clathrate hydrates are intrinsically different and are degraded by the presence of nanocracks. They show brittle facture and different fracture toughness. In terms of energy release rate, they are ranked as sH> sI > sH. Moreover, the three methane clathrate hydrates with nanocracks can be explained by a modified Griffith criterion. Moreover, it is intriguingly identified tip amorphization during the crack propagation process of the three methane clathrate hydrates, and sH methane clathrate hydrate with specific nanocrack exhibits slower crack propagation than other two methane clathrate hydrates. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21818]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Wu, JY (corresponding author), Xiamen Univ, Dept Phys, Res Inst Biomimet & Soft Matter, Jiujiang Res Inst, Xiamen 361005, Peoples R China. 2.Wu, JY (corresponding author), Xiamen Univ, Fujian Prov Key Lab Soft Funct Mat Res, Xiamen 361005, Peoples R China. 3.Zhang, ZS |
| 推荐引用方式 GB/T 7714 | Liu, Jinjie,Xu, Ke,Yang, Li,et al. Fracture mechanics of methane clathrate hydrates[J]. ACTA MECHANICA SINICA,2021. |
| APA | Liu, Jinjie.,Xu, Ke.,Yang, Li.,Lin, Yanwen.,Li, Tong.,...&Wu, Jianyang.(2021).Fracture mechanics of methane clathrate hydrates.ACTA MECHANICA SINICA. |
| MLA | Liu, Jinjie,et al."Fracture mechanics of methane clathrate hydrates".ACTA MECHANICA SINICA (2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。