Parameter studies on the mineral boundary strength influencing the fracturing of the crystalline rock based on a novel Grain-Based Model
文献类型：期刊论文
| 作者 | Wang, Song1,2,4; Zhou, Jian3; Zhang, Luqing1,2,4; Han, Zhenhua1,4; Zhang, Fenxiang1,2,4 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2021 |
| 卷号 | 241页码:21 |
| ISSN号 | 0013-7944 |
| 关键词 | Discrete element method Grain-based model Crystalline rock Mineral boundary Microcracking evolution |
| DOI | 10.1016/j.engfracmech.2020.107388 |
| 英文摘要 | The grain-based model (GBM) in two-dimensional Particle Flow Code (PFC2D) is widely employed to investigate the mechanical response characteristics of crystalline rocks under external load considering the realistic petrographic texture. However, due to the poor self-locking effect of the Parallel-Bond (PB) inside the minerals and unreasonable parametric assignment for the Smooth-Joint (SJ) at the mineral boundaries, the original GBM cannot reproduce the exact microcracking process of brittle rocks. To solve the problem, the novel grain-based model (nGBM) composed of the Flat-Joint (FJ) and the SJ was proposed in our previous research, which not only enhances the rotational resistance of particles, but also improves the simulation of the mineral boundaries. In this study, the nGBM was carefully established and calibrated based on the properties of Alxa porphyritic granite. A series of simulation tests of uniaxial compression, triaxial compression and direct tension under different mineral boundary parametric conditions were carried out to observe the deformation, microcracking and failure behaviors of the nGBM. Quantitative analyses of the mineral boundary properties and the mechanical behaviors of the numerical specimen revealed the extremely complicated relationships between them, which can help explain the micromechanical damage process of crystalline rocks and provide valuable reference for the model calibration. |
| WOS关键词 | DISCRETE ELEMENT METHOD ; MICROCRACKING BEHAVIOR ; ACOUSTIC-EMISSION ; COMPRESSION TESTS ; CRACK INITIATION ; PARTICLE MODEL ; GRANITE ; PROPAGATION ; SIMULATION ; SANDSTONE |
| 资助项目 | National Key Research and Development Program[2018YFB1501801] ; National Natural Science Foundation of China[41972287] ; National Natural Science Foundation of China[41672321] ; China Postdoctoral Science Foundation[2018M630204] ; China Postdoctoral Science Foundation[2019T120133] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000605613900001 |
| 资助机构 | National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/99987]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Zhou, Jian; Zhang, Luqing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Song,Zhou, Jian,Zhang, Luqing,et al. Parameter studies on the mineral boundary strength influencing the fracturing of the crystalline rock based on a novel Grain-Based Model[J]. ENGINEERING FRACTURE MECHANICS,2021,241:21. |
| APA | Wang, Song,Zhou, Jian,Zhang, Luqing,Han, Zhenhua,&Zhang, Fenxiang.(2021).Parameter studies on the mineral boundary strength influencing the fracturing of the crystalline rock based on a novel Grain-Based Model.ENGINEERING FRACTURE MECHANICS,241,21. |
| MLA | Wang, Song,et al."Parameter studies on the mineral boundary strength influencing the fracturing of the crystalline rock based on a novel Grain-Based Model".ENGINEERING FRACTURE MECHANICS 241(2021):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
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