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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.
Source PublicationJOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
2016
Volume96Pages:18-28
ISSN0022-5096
AbstractFrom 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.
KeywordRough Surface Contact Strain Gradient Plasticity Pressure Distribution
DOI10.1016/j.jmps.2016.07.008
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000386744600002
WOS KeywordRough surface ; Contact ; Strain gradient plasticity ; Pressure distribution
WOS Research AreaMaterials Science ; Mechanics ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter
Funding OrganizationFoundation 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]
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59941
Collection非线性力学国家重点实验室
Corresponding AuthorVan 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.
Recommended Citation
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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