| Entropy generation related to plastic deformation in fretting friction | |
| Department | 固体润滑国家重点实验室 |
Song, Yi1,2; Dai, Zhendong1; Xue QJ(薛群基)3
| |
| 2014 | |
| Source Publication | Wear
 |
| ISSN | 0043-1648 |
| Volume | 315Issue:1-2Pages:42-50 |
| Abstract | Plastic deformation is generally considered as one of the principal mechanisms to dissipate energy in tribological procedures, but how the energy is dissipated through plastic deformation is still not clearly understood because the tribological procedures are influenced by a large number of strongly coupled time-varying factors, which make tribology extraordinarily complicated and obscure. This paper calculates the entropy generation produced by plastic deformation during fretting. A computational formula for entropy generation produced by plastic behaviors is set up and further validated by using an elastic-plastic finite-element-based method with the commonly used cylinder-on-flat configuration. Both the maximum and the minimum entropy generation are found several tens of micrometers below the contact surfaces, indicating that the major energy is dissipated in this region. The entropy generation in front of the contact centers is generally negative, whereas that behind the contact centers is always positive. Particularly surprising is that the overall entropy generation is negative. These findings reveal that the microstructures in front of the contact centers possibly tend to be more ordered whereas those behind the contact centers may be prone to more disordered. Regions several micrometers below the surface are the most dissipative and degrade easily. |
| Keyword | Entropy Generation Energy Dissipation Fretting Plasticity Deformation Fem |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.wear.2014.03.008 |
| Funding Organization | the Doctoral Program of Higher Education of China (Grant no. 20123218110031); the National Natural Science Foundation of China (Grant no. 61161120323) |
| Indexed By | SCI |
| If | 1.913 |
| Language | 英语 |
| compositor | 第三作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18277 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Dai, Zhendong |
| Affiliation | 1.Nanjing Univ Aeronaut & Astronaut, Inst Bioinspired Struct & Surface Engn, Nanjing 210016, Jiangsu, Peoples R China 2.Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, Nanjing 210016, Jiangsu, Peoples R China 3.Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Song, Yi,Dai, Zhendong,Xue QJ. Entropy generation related to plastic deformation in fretting friction[J]. Wear,2014,315(1-2):42-50. |
| APA | Song, Yi,Dai, Zhendong,&Xue QJ.(2014).Entropy generation related to plastic deformation in fretting friction.Wear,315(1-2),42-50. |
| MLA | Song, Yi,et al."Entropy generation related to plastic deformation in fretting friction".Wear 315.1-2(2014):42-50. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| LZ01027775.pdf（3555KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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