Effects of particle shape, physical properties and particle size distribution on the small-strain stiffness of granular materials: A DEM study
文献类型：期刊论文
| 作者 | Gong, Jian1,2; Pang, Xianwei2; Tang, Yu2; Liu, Ming3; Jiang, Jie2; Ou, Xiaoduo2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024 |
| 卷号 | 165页码:12 |
| 关键词 | Small-strain stiffness Particle shape Physical properties Particle size distribution Contact stiffness DEM |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2023.105903 |
| 英文摘要 | The effects of particle shape (angularity alpha and sphericity S), physical properties (shear modulus Gp and Poisson's ratio nu p) and particle size distribution (uniformity coefficient Cu) on the small-strain stiffness Gmax were investigated via the discrete element method (DEM) in this study. The Gmax values were obtained by DEM simulations of drained triaxial tests. Microscopic analysis indicates that Gmax uniquely depends on two microscale variants, i. e., the mechanical coordination number CNm and contact stiffness between particles. The particle shape effect was only related to CNm. The contact stiffness can be represented by the values of Gp and Cu. Accordingly, an empirical expression composed of CNm, Gp and Cu that can predict the Gmax of granular materials with different particle properties (e.g., particle size distribution, particle shape, and fabric effect) was proposed. The accuracy of the expression has been verified by comparing the data with previous studies. |
| 资助项目 | National Natural Science Foundation of China[52368045] ; National Natural Science Foundation of China[51809292] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME021007] ; China Postdoctoral Science Foundation[2022MD723786] ; Guangxi Science and Technology Base and Talent Project[2021AC19244] ; Major Project of Guangxi Science and Technology[AA23023016] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001111535100001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40005]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jiang, Jie |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Guangxi Univ, Sch Civil Engn & Architecture, Nanning 530004, Guangxi, Peoples R China 3.CCCC First Harbor Engn Co Ltd, Tianjin 300461, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Jian,Pang, Xianwei,Tang, Yu,et al. Effects of particle shape, physical properties and particle size distribution on the small-strain stiffness of granular materials: A DEM study[J]. COMPUTERS AND GEOTECHNICS,2024,165:12. |
| APA | Gong, Jian,Pang, Xianwei,Tang, Yu,Liu, Ming,Jiang, Jie,&Ou, Xiaoduo.(2024).Effects of particle shape, physical properties and particle size distribution on the small-strain stiffness of granular materials: A DEM study.COMPUTERS AND GEOTECHNICS,165,12. |
| MLA | Gong, Jian,et al."Effects of particle shape, physical properties and particle size distribution on the small-strain stiffness of granular materials: A DEM study".COMPUTERS AND GEOTECHNICS 165(2024):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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