| Mechanical behavior and micro-mechanism of carbon nanotube networks under friction | |
Hu TX(胡天雄); Qian GA(钱桂安); Wu XQ(吴先前) ; Wang C(王超)
| |
| Source Publication | CARBON
 |
| 2022-11 | |
| Volume | 200Pages:108-115 |
| ISSN | 0008-6223 |
| Abstract | Friction behavior of carbon nanotube networks (CNNs) is ubiquitous in applications, however, is poorly inves-tigated. Here, we employ coarse-grained molecular dynamics (CGMD) simulations to investigate friction be-haviors and microscopic mechanism of CNNs. We first give a phase diagram to determine the initial contacting state of supported or trapped for an indenter in CNNs. In a supported state, friction force is mainly orig-inated from the local surface adhesion of CNNs which experience stable elastic deformation in friction process. In contrast, in a trapped state, friction force is mainly activated by nonlocal reconstitution of carbon nanotubes (CNTs) accompanied with irreversible bond breaking. Furthermore, with an increased normal pressure, the friction force keeps nearly constant for a supported indenter while it increases linearly for a trapped one; the friction force is linearly or nonlinearly related to the sliding velocity of an indenter in a supported or trapped state. Importantly, there is a critical crosslink density, above which, the coefficient of friction is greatly decreased due to enhanced integrity of CNNs. These results provide a profound understanding of friction deformation behavior of CNNs, which is of great significance for optimal design in practical applications. |
| Keyword | Carbon nanotube network Friction Crosslink Deformation behavior Coarse -grained molecular dynamics |
| Subject Area | Chemistry, Physical ; Materials Science, Multidisciplinary |
| DOI | 10.1016/j.carbon.2022.08.042 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000855241200002 |
| Funding Organization | NSFC [11972348, 11790292] ; Strategic Priority Research Program of the Chinese Acad- emy of Sciences [XDB22040503] |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Wang, C (corresponding author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90149 |
| Collection | 非线性力学国家重点实验室 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Mech, LMFS, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Hu TX,Qian GA,Wu XQ,et al. Mechanical behavior and micro-mechanism of carbon nanotube networks under friction[J]. CARBON,2022,200:108-115.Rp_Au:Wang, C (corresponding author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| APA | 胡天雄,钱桂安,吴先前,&王超.(2022).Mechanical behavior and micro-mechanism of carbon nanotube networks under friction.CARBON,200,108-115. |
| MLA | 胡天雄,et al."Mechanical behavior and micro-mechanism of carbon nanotube networks under friction".CARBON 200(2022):108-115. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2022FA079_2022_Mec（7025KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment