Discrete element modelling of flexible membrane boundaries for triaxial tests
文献类型：期刊论文
| 作者 | Qu, Tongming; Feng, Y. T.; Wang, Yong; Wang, Min |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2019 |
| 卷号 | 115页码:- |
| 关键词 | DEM Triaxial tests Flexible membrane boundary Strain energy Shear band Fabric evolution |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2019.103154 |
| 英文摘要 | The discrete element modelling of triaxial tests plays a critical role in unveiling fundamental properties of particulate materials, but the numerical implementation of a flexible membrane boundary for the testing still imposes problems. In this study, a robust algorithm was proposed to reproduce a flexible membrane boundary in triaxial testing. The equivalence of strain energy enables the particle-scale parameters representing the flexible membrane to be directly determined from the real geometric and material parameters of the membrane. Then the proposed flexible membrane boundary was implemented in the context of discrete element simulation of triaxial testing and was validated with laboratory experiments. Furthermore, comparisons of triaxial tests with flexible and rigid boundaries were performed from macro-scale to meso-scale. The results show that the boundary condition has limited influences on the stress-strain behaviour but a relatively large impact on the volumetric change, the failure mode, the distribution of contact forces, and the fabric evolution of particles in the specimen during triaxial testing. |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000506718800011 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14826]  |
| 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.Swansea Univ, Coll Engn, Zienkiewicz Ctr Computat Engn, Swansea SA1 8EP, W Glam, Wales; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China; 3.Los Alamos Natl Lab, Theoret Div, T 3 Fluid Dynam & Solid Mech Grp, Los Alamos, NM 87545 USA |
| 推荐引用方式 GB/T 7714 | Qu, Tongming,Feng, Y. T.,Wang, Yong,et al. Discrete element modelling of flexible membrane boundaries for triaxial tests[J]. COMPUTERS AND GEOTECHNICS,2019,115:-. |
| APA | Qu, Tongming,Feng, Y. T.,Wang, Yong,&Wang, Min.(2019).Discrete element modelling of flexible membrane boundaries for triaxial tests.COMPUTERS AND GEOTECHNICS,115,-. |
| MLA | Qu, Tongming,et al."Discrete element modelling of flexible membrane boundaries for triaxial tests".COMPUTERS AND GEOTECHNICS 115(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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