The role of transgranular capability in grain-based modelling of crystalline rocks
文献类型：期刊论文
| 作者 | Li, X. F.; Li, H. B.; Zhao, J. |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2019 |
| 卷号 | 110期号:-页码:161-183 |
| 关键词 | Grain crushing Intergranular and transgranular cracks Grain-based model Discrete element method (DEM) simulation Heterogeneity |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2019.02.018 |
| 英文摘要 | Considering that many numerical methods have been developed to study the mechanical properties of rocks based on micro heterogeneities such as mineral size, morphology, composition and boundary defects, an overview of grain-based modelling is presented in this study to compare the advantages and limitations of different grain-mimicking methods. Intergranular and transgranular fracturing models and difficulties in parameter calibrations are discussed. Four typical grain models, UDEC-GBM, GB-FDEM, cluster and clump, are used to represent the two main families: block-based grains and particle-based grains with and without considering grain crushing. Subsequently, how grain crushing affects crack stresses, Hoek-Brown strength parameters m(i), localized shearing and cracking transformation is simulated by these grain models. The simulated results indicate that the approaches capable of grain breakage lead to more consistent results in comparison with laboratory tests, for example, evident dilatancy in uniaxial compressive loading, high strength ratios, nonlinear failure strength envelopes and shear bands under high confinement. The role of transgranular capability is significantly important in the simulation of rock deformation using grain models. |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000466261700013 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14977]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China; 3.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia |
| 推荐引用方式 GB/T 7714 | Li, X. F.,Li, H. B.,Zhao, J.. The role of transgranular capability in grain-based modelling of crystalline rocks[J]. COMPUTERS AND GEOTECHNICS,2019,110(-):161-183. |
| APA | Li, X. F.,Li, H. B.,&Zhao, J..(2019).The role of transgranular capability in grain-based modelling of crystalline rocks.COMPUTERS AND GEOTECHNICS,110(-),161-183. |
| MLA | Li, X. F.,et al."The role of transgranular capability in grain-based modelling of crystalline rocks".COMPUTERS AND GEOTECHNICS 110.-(2019):161-183. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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。