The influence of rolling resistance on the stress-dilatancy and fabric anisotropy of granular materials
文献类型：期刊论文
| 作者 | Liu, Yiming1; Liu, Huabei1; Mao, Haijun2 |
| 刊名 | GRANULAR MATTER
 |
| 出版日期 | 2018 |
| 卷号 | 20期号:1页码:- |
| 关键词 | Discrete element method Rolling resistance Dilatancy Fabric anisotropy Granular materials |
| ISSN号 | 1434-5021 |
| DOI | 10.1007/s10035-017-0780-z |
| 英文摘要 | The effects of rolling resistance on the stress-dilatancy behavior and fabric anisotropy of granular materials were investigated through a three-dimensional discrete element method (DEM). A rolling resistance model was incorporated into the DEM code PFC3D and triaxial DEM simulations under simulated drained and undrained conditions were carried out. The results show that there existed a threshold value of the rolling friction. When the rolling friction was smaller than this value, the mechanical behavior of granular materials under both drained and undrained conditions were substantially influenced by the rolling friction, but the influence diminished when it was larger than the threshold value. A linear relationship has been observed between the dilatancy coefficient and the natural logarithm of the rolling-friction coefficient when it was smaller than the threshold value. An increase in the rolling friction led to an increase in the fabric anisotropy of all strong contacts under both testing conditions until the threshold value was attained. The investigation on the effect of rolling friction on the microstructure of granular materials revealed that the rolling friction enhanced the stability of force chains, which resulted in the difference in the stress-dilatancy behavior. Finally, the relationship between the stress ratio q/p' and the fabric measure at strong contacts H-d(s)/H-m(s) was found independent of the inter-particle friction, rolling friction and testing conditions. |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000424741100010 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4214]  |
| 专题 | 岩土力学所知识全产出_期刊论文 |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Sch Civil Engn & Mech, 1037 Luoyu Rd ; 2.Chinese Acad Sci, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Liu, Yiming,Liu, Huabei,Mao, Haijun. The influence of rolling resistance on the stress-dilatancy and fabric anisotropy of granular materials[J]. GRANULAR MATTER,2018,20(1):-. |
| APA | Liu, Yiming,Liu, Huabei,&Mao, Haijun.(2018).The influence of rolling resistance on the stress-dilatancy and fabric anisotropy of granular materials.GRANULAR MATTER,20(1),-. |
| MLA | Liu, Yiming,et al."The influence of rolling resistance on the stress-dilatancy and fabric anisotropy of granular materials".GRANULAR MATTER 20.1(2018):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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