Hysteresis in three-dimensional multi-layer molecularly thin-film lubrication | |
Wu ZB(武作兵) | |
刊名 | ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS |
2023-05 | |
卷号 | 237页码:737-63 |
关键词 | friction hysteresis multiscale modeling shear stress thin-film lubrication |
ISSN号 | 0942-9352 |
DOI | 10.1515/zpch-2023-0220 |
英文摘要 | For three-dimensional multi-layer molecularly thin-film lubrication system with elastic substrates, roles of hysteresis on tribological properties are investigated by using the multiscale simulation method. It is found that multiple stick-slip transitions with/without hysteresis loops appear in a sliding process and form a quasi-periodic progress with lattice distance. For the few-/multi-layer thin-film lubrication system, as the load increases, the hysteresis length monotonously increases/tends to keep constant. The hysteresis is mainly caused by the relaxation of metastable states of solid atoms in the elastic substrates, which delays the system back to its equilibrium states. In the quasi-periodic shearing progress, the effective elastic coefficients and the hysteresis lengths approximately remain unchanged, which reveals that although the hysteresis loops with the same lengths appear in the sliding process, the total systematic energy is still conserved. These findings not only provide a profound understanding of roles of hysteresis in the thin-film lubrication system but also show the effects of film layers and loads on the systematic tribological properties, which are of great significance for practical applications. |
分类号 | 二类 |
WOS研究方向 | WOS:000988834500001 |
语种 | 英语 |
资助机构 | National Natural Science Foundation of China [11172310, 11472284, 12272384] |
其他责任者 | Wu ZB |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/92248] |
专题 | 力学研究所_非线性力学国家重点实验室 |
作者单位 | 1.(Wu Zuo-Bing) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.(Wu Zuo-Bing) Chinese Acad Sci Inst Mech LNM Beijing 100190 Peoples R China |
推荐引用方式 GB/T 7714 | Wu ZB. Hysteresis in three-dimensional multi-layer molecularly thin-film lubrication[J]. ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS,2023,237:737-63. |
APA | Wu ZB.(2023).Hysteresis in three-dimensional multi-layer molecularly thin-film lubrication.ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS,237,737-63. |
MLA | Wu ZB."Hysteresis in three-dimensional multi-layer molecularly thin-film lubrication".ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS 237(2023):737-63. |
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