Discrete Element Modelling of the Mechanical Behavior of Sand-Rubber Mixtures under True Triaxial Tests
文献类型：期刊论文
| 作者 | Liu, Yiming2; Liao, Xinchao2; Li, Lihua2; Mao, Haijun1,3 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 13期号:24页码:24 |
| 关键词 | discrete element method intermediate principle stress force transmission fabric anisotropy sand-rubber mixtures |
| DOI | 10.3390/ma13245716 |
| 英文摘要 | Sand-rubber mixtures (SRMs) consisting of stiff sand particles and soft rubber particles are typical binary mixture materials that possess a variety of complicated properties. The complexity of the properties of sand-rubber mixtures is increased when complex stress path is involved. This study investigates the mechanical behavior of sand-rubber mixtures under generalized loading conditions using the discrete element method. A series of numerical true triaxial shear tests were conducted on pure sand and sand-rubber mixtures. The effect of rubber content and loading path on both of the macroscopic and microscopic performances of sand-rubber mixtures was investigated, and the associated microscale mechanism was also discussed. Numerical simulations show that the relationship between the peak friction angle phi p and the intermediate principal stress ratio b is influenced by the addition of rubber particles, and a suggested explanation of this phenomenon is that the rubber particles mainly affect the inherent stability of the strong network. Particle-scale observations, including the coordinate number, the proportion of strong contacts, and the fabric anisotropy, are also presented in this study. Microscopic results confirm the explanation above, and explore the force transmission characteristics of sand-rubber mixtures under generalized loading conditions. This research can provide a reference for the constitutive model development of sand-rubber mixtures. |
| 资助项目 | National Natural Science Foundation of China[51808204] ; National Natural Science Foundation of China[51678224] ; National Natural Science Foundation of China[51778217] ; Hubei Central Special Fund for Local Science and Technology Development[2019ZYYD053] ; Hubei Central Special Fund for Local Science and Technology Development[2018ZYYD005] ; Hubei Provincial Science Foundation for Distinguished Young Scholars[2018CFA063] ; PhD Research Startup Foundation of Hubei University of Technology[BSQD2019040] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000602817400001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25379]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Lihua |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430068, Peoples R China 3.State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yiming,Liao, Xinchao,Li, Lihua,et al. Discrete Element Modelling of the Mechanical Behavior of Sand-Rubber Mixtures under True Triaxial Tests[J]. MATERIALS,2020,13(24):24. |
| APA | Liu, Yiming,Liao, Xinchao,Li, Lihua,&Mao, Haijun.(2020).Discrete Element Modelling of the Mechanical Behavior of Sand-Rubber Mixtures under True Triaxial Tests.MATERIALS,13(24),24. |
| MLA | Liu, Yiming,et al."Discrete Element Modelling of the Mechanical Behavior of Sand-Rubber Mixtures under True Triaxial Tests".MATERIALS 13.24(2020):24. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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