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Statistical model of rough surface contact accounting for size-dependent plasticity and asperity interaction
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.
Source PublicationJOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
2017-09-01
Volume106Pages:1-14
ISSN0022-5096
AbstractThe 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.
DOI10.1016/j.jmps.2017.05.014
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000406983300001
WOS KeywordSTRAIN GRADIENT PLASTICITY ; NANOINDENTATION HARDNESS EXPERIMENTS ; DISCRETE DISLOCATION PLASTICITY ; MICROINDENTATION ; INDENTATION ; FLAT
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 ; 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)
Classification一类/力学重要期刊
Ranking3
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/70031
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, Dept Appl Phys, NL-9747 AG Groningen, Netherlands.
Recommended Citation
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 .(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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