Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces
文献类型：期刊论文
| 作者 | Song H ; Van der Giessen, E; Liu X
|
| 刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
 |
| 出版日期 | 2016 |
| 卷号 | 96页码:18-28 |
| 通讯作者邮箱 | E.van.der.Giessen@rug.nl ; xiaomingliu@lnm.imech.ac.cn |
| 关键词 | Rough surface Contact Strain gradient plasticity Pressure distribution |
| ISSN号 | 0022-5096 |
| 产权排序 | [Song, H.; Van der Giessen, E.] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands; [Liu, X.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Van der Giessen, E (reprint author), Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands. ; Liu, X (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | From a microscopic point of view, the real contact area between two rough surfaces is the sum of the areas of contact between facing asperities. Since the real contact area is a fraction of the nominal contact area, the real contact pressure is much higher than the nominal contact pressure, which results in plastic deformation of asperities. As plasticity is size dependent at size scales below tens of micrometers, with the general trend of smaller being harder, macroscopic plasticity is not suitable to describe plastic deformation of small asperities and thus fails to capture the real contact area and pressure accurately. Here we adopt conventional mechanism-based strain gradient plasticity (CMSGP) to analyze the contact between a rigid platen and an elasto-plastic solid with a rough surface. Flattening of a single sinusoidal asperity is analyzed first to highlight the difference between CMSGP and J(2) isotropic plasticity. For the rough surface contact, besides CMSGP, pure elastic and J(2) isotropic plasticity analysis is also carried out for comparison. In all cases, the contact area A rises linearly with the applied load, but with a different slope which implies that the mean contact pressures are different. CMSGP produces qualitative changes in the distributions of local contact pressures compared with pure elastic and J(2) isotropic plasticity analysis, furthermore, bounded by the two. (C) 2016 Elsevier Ltd. All rights reserved. |
| 分类号 | 一类 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter |
| 研究领域[WOS] | Materials Science ; Mechanics ; Physics |
| 关键词[WOS] | Rough surface ; Contact ; Strain gradient plasticity ; Pressure distribution |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.jmps.2016.07.008 |
| 语种 | 英语 |
| WOS记录号 | WOS:000386744600002 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59941]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Song H,Van der Giessen, E,Liu X. Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2016,96:18-28. |
| APA | Song H,Van der Giessen, E,&Liu X.(2016).Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,96,18-28. |
| MLA | Song H,et al."Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 96(2016):18-28. |
入库方式： OAI收割
来源：力学研究所
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