Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces

doi:10.1016/j.jmps.2016.07.008

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	Strain gradient plasticity analysis of elasto-plastic contact between rough surfaces
	Song H; Van der Giessen, E; Liu X; 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.
发表期刊	JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
	2016
卷号	96 页码:18-28
ISSN	0022-5096
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.
关键词	Rough Surface Contact Strain Gradient Plasticity Pressure Distribution
DOI	10.1016/j.jmps.2016.07.008
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000386744600002
关键词[WOS]	Rough surface ; Contact ; Strain gradient plasticity ; Pressure distribution
WOS研究方向	Materials Science ; Mechanics ; Physics
WOS类目	Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter
项目资助者	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, 91216108, 11572329] ; State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA Grant) [MCMS-0114G01] ; State Key Laboratory of Structural Analysis for Industrial Equipment (DUT Grant) [GZ15116]
论文分区	一类
引用统计	被引频次：36[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/59941
专题	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, NL-9747 AG Groningen, Netherlands.; Liu, X (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Song H,Van der Giessen, E,Liu X,et al. 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,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.

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