Study of the shear-rate dependence of granular friction based on community detection
文献类型：期刊论文
| 作者 | Zhang, YW; Hu, GK; Chen, XS ; Chen, W1; Liu, WQ
|
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2019 |
| 卷号 | 62期号:4页码:40511 |
| 关键词 | NETWORKS DYNAMICS MEDIA |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-018-9295-2 |
| 英文摘要 | In this study, computer simulations are performed on three-dimensional granular systems under shear conditions. The system comprises granular particles that are confined between two rigid plates. The top plate is subjected to a normal force and driven by a shearing velocity. A positive shear-rate dependence of granular friction, known as velocity-strengthening, exists between the granular and shearing plate. To understand the origin of the dependence of frictional sliding, we treat the granular system as a complex network, where granular particles are nodes and normal contact forces are weighted edges used to obtain insight into the interiors of granular matter. Community structures within granular property networks are detected under different shearing velocities in the steady state. Community parameters, such as the size of the largest cluster and average size of clusters, show significant monotonous trends in shearing velocity associated with the shear-rate dependence of granular friction. Then, we apply an instantaneous change in shearing velocity. A dramatic increase in friction is observed with a change in shearing velocity in the non-steady state. The community structures in the non-steady state are different from those in the steady state. Results indicate that the largest cluster is a key factor affecting the friction between the granular and shearing plate. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23458]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 2.Kunming Univ Sci & Technol, Data Sci Res Ctr, Fac Sci, Kunming 650500, Yunnan, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, YW,Hu, GK,Chen, XS,et al. Study of the shear-rate dependence of granular friction based on community detection[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(4):40511. |
| APA | Zhang, YW,Hu, GK,Chen, XS,Chen, W,&Liu, WQ.(2019).Study of the shear-rate dependence of granular friction based on community detection.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(4),40511. |
| MLA | Zhang, YW,et al."Study of the shear-rate dependence of granular friction based on community detection".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.4(2019):40511. |
入库方式： OAI收割
来源：理论物理研究所
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