Knowledge Management System of Institue of Mechanics, CAS
| Hybrid Atomistic-Coarse-Grained Treatment of Thin-Film Lubrication II | |
Wu ZB(武作兵) ; Diestler DJ; Feng R; Zeng XC
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| Source Publication | Journal of Chemical Physics
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| 2004 | |
| Volume | 121Issue:16Pages:8029-8038 |
| ISSN | 0021-9606 |
| Abstract | A new hybrid atomistic-coarse-grained ~HACG! treatment of reversible processes in multiple-scale systems involving fluid-solid interfaces was tested through isothermal-isobaric Monte Carlo simulations of the quasistatic shearing of a model two-dimensional lubricated contact comprising two planar Lennard-Jones solid substrates that sandwich a softer Lennard-Jones film. Shear-stress profiles ~plots of shear stress Tyx versus lateral displacement of the substrates! obtained by the HACG technique, which combines an atomistic description of the interfacial region with a continuum description of regions well removed from the interface, are compared with ‘‘exact’’ profiles ~obtained by treating the whole system at the atomic scale! for a selection of thermodynamic states that correspond to systematic variations of temperature, load ~normal stress!, film-substrate coupling strength, and film thickness. The HACG profiles are in excellent agreement overall with the exact ones. The HACG scheme provides a reliable description of quasistatic shearing under a wide range of conditions. It is demonstrated that the elastic response of the remote regions of the substrates can have a significant impact on the static friction profile ~plot of maximum magnitude of Tyx versus load! |
| Subject Area | 力学 |
| DOI | 10.1063/1.1792154 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000224456500057 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Atomic, Molecular & Chemical |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/15365 |
| Collection | 力学所知识产出(1956-2008) |
| Recommended Citation GB/T 7714 | Wu ZB,Diestler DJ,Feng R,et al. Hybrid Atomistic-Coarse-Grained Treatment of Thin-Film Lubrication II[J]. Journal of Chemical Physics,2004,121,16,:8029-8038. |
| APA | 武作兵,Diestler DJ,Feng R,&Zeng XC.(2004).Hybrid Atomistic-Coarse-Grained Treatment of Thin-Film Lubrication II.Journal of Chemical Physics,121(16),8029-8038. |
| MLA | 武作兵,et al."Hybrid Atomistic-Coarse-Grained Treatment of Thin-Film Lubrication II".Journal of Chemical Physics 121.16(2004):8029-8038. |
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