Statistical model of rough surface contact accounting for size-dependent plasticity and asperity interaction
文献类型：期刊论文
| 作者 | Song H ; Vakis A I; Liu X; Van der Giessen E; Van der Giessen, E (reprint author), Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, NL-9747 AG Groningen, Netherlands.; Liu XM(刘小明)
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| 刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
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| 出版日期 | 2017-09-01 |
| 卷号 | 106页码:1-14 |
| ISSN号 | 0022-5096 |
| DOI | 10.1016/j.jmps.2017.05.014 |
| 文献子类 | Article |
| 英文摘要 | The work by Greenwood and Williamson (GW) has initiated a simple but effective method of contact mechanics: statistical modeling based on the mechanical response of a single asperity. Two main assumptions of the original GW model are that the asperity response is purely elastic and that there is no interaction between asperities. However, as asperities lie on a continuous substrate, the deformation of one asperity will change the height of all other asperities through deformation of the substrate and will thus influence subsequent contact evolution. Moreover, a high asperity contact pressure will result in plasticity, which below tens of microns is size dependent, with smaller being harder. In this paper, the asperity interaction effect is taken into account through substrate deformation, while a size-dependent plasticity model is adopted for individual asperities. The intrinsic length in the strain gradient plasticity (SGP) theory is obtained by fitting to two-dimensional discrete dislocation plasticity simulations of the flattening of a single asperity. By utilizing the single asperity, response in three dimensions and taking asperity interaction into account, a statistical calculation of rough surface contact is performed. The effectiveness of the statistical model is addressed by comparison with full-detail finite element simulations of rough surface contact using SGP. Throughout the paper, our focus is on the difference of contact predictions based on size-dependent plasticity as compared to conventional size independent plasticity. (C) 2017 Elsevier Ltd. All rights reserved. |
| 分类号 | 一类/力学重要期刊 |
| URL标识 | 查看原文 |
| WOS关键词 | STRAIN GRADIENT PLASTICITY ; NANOINDENTATION HARDNESS EXPERIMENTS ; DISCRETE DISLOCATION PLASTICITY ; MICROINDENTATION ; INDENTATION ; FLAT |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000406983300001 |
| 资助机构 | Foundation for Fundamental Research on Matter (FOM) ; Netherlands Organisation for Scientific Research (NWO)(13POF07-1) ; National Basic Research Program of China(2012CB937500) ; National Natural Science Foundation of China(11202214 ; State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA)(MCMS-0114G01) ; State Key Laboratory of Structural Analysis for Industrial Equipment (DUT)(GZ15116) ; 91216108 ; 11572329) |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/70031]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Van der Giessen, E (reprint author), Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, NL-9747 AG Groningen, Netherlands. |
| 推荐引用方式 GB/T 7714 | Song H,Vakis A I,Liu X,et al. Statistical model of rough surface contact accounting for size-dependent plasticity and asperity interaction[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2017,106:1-14. |
| APA | Song H,Vakis A I,Liu X,Van der Giessen E,Van der Giessen, E ,&Liu XM.(2017).Statistical model of rough surface contact accounting for size-dependent plasticity and asperity interaction.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,106,1-14. |
| MLA | Song H,et al."Statistical model of rough surface contact accounting for size-dependent plasticity and asperity interaction".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 106(2017):1-14. |
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来源：力学研究所
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