Simulation on heterogeneous rocks with a flaw using grain-based discrete-element method
文献类型：期刊论文
| 作者 | Liu, L.1,4; Li, H.1,4; Li, X.1; Zhou, C.3; Zhang, G.2 |
| 刊名 | GEOTECHNIQUE LETTERS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 11期号:1页码:10 |
| 关键词 | discrete-element modelling mineralogy rocks/rock mechanics |
| ISSN号 | 2049-825X |
| DOI | 10.1680/jgele.20.00083 |
| 英文摘要 | To take into consideration the effect of mineral microstructure on crack growth and mechanical properties of heterogeneous rocks containing a single pre-existing flaw under uniaxial compression, the discrete-element method in combination with the grain-based model was adopted in this study. The results indicate that the characteristic stresses - that is, crack initiation stress, crack damage stress and peak strength, generally increase with respect to the inclination angle. The normalised crack initiation stress increases with the increasing angle, while the normalised crack damage stress has no pronounced change. Additionally, the variation of inclination angles has little influence on the grain-scale crack growth. The initiation of intergranular cracks is prior to the intragranular cracks, and the proportion of intragranular cracks is slightly greater than intergranular cracks at the peak failure moment. The ultimate failure patterns obtained by numerical simulations agree well with the experimental results, revealing the cracks generated from the pre-existing flaw consist of intragranular and intergranular cracks at the grain scale. |
| 资助项目 | National Key R&D Program of China[2020YFA0711802] ; National Natural Science Foundation of China[51809137] ; National Natural Science Foundation of China[41525009] ; Natural Science Foundation of Jiangsu Province[BK 20180480] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000628760600009 |
| 出版者 | ICE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25933]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, L. |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing, Peoples R China 3.China Univ Geosci Wuhan, Fac Engn, Wuhan, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, L.,Li, H.,Li, X.,et al. Simulation on heterogeneous rocks with a flaw using grain-based discrete-element method[J]. GEOTECHNIQUE LETTERS,2021,11(1):10. |
| APA | Liu, L.,Li, H.,Li, X.,Zhou, C.,&Zhang, G..(2021).Simulation on heterogeneous rocks with a flaw using grain-based discrete-element method.GEOTECHNIQUE LETTERS,11(1),10. |
| MLA | Liu, L.,et al."Simulation on heterogeneous rocks with a flaw using grain-based discrete-element method".GEOTECHNIQUE LETTERS 11.1(2021):10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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