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Influences of Morphology Parameters on the Contact Behavior of a Steel Interface
Fan LF1; Zhao L1; Liu XM(刘小明)2
Corresponding AuthorLiu, X. M.(xiaomingliu@imech.ac.cn)
Source PublicationINTERNATIONAL JOURNAL OF APPLIED MECHANICS
2020
Volume12Issue:1Pages:28
ISSN1758-8251
AbstractThe surface roughness induced by geometric irregularities (asperities) has substantial influence on the contact stiffness, which further affects the working performance and service life of mechanical equipment. In this study, an elastic-plastic contact law between a sinusoidal asperity and a rigid smooth flat is first studied, which is then applied on a statistical model to simulate the contact behavior of a pair of 18CrMo4 steel surfaces to investigate the influences of morphology parameters on the contact stiffness. The analysis shows that smaller shape ratios xi and larger wavelengths lambda induce larger normal contact stiffness K-n for surfaces with identical roughness, wherein the roughness is defined by the mean value of asperity heights R-a and the standard deviation of asperity heights R-q. The normal contact stiffness increases as R-a decreases under the same loading conditions, while the normal contact stiffness increases as R-q decreases for surfaces with a fixed R-a. Besides, the normal pressure and normal contact, stiffness derived from the proposed contact model are validated. The results demonstrate the potential of the proposed model in contact design due to its ability of establishing the relations between the normal contact stiffness and surface morphology parameters.
KeywordSinusoidal asperities contact stiffness elastic-plastic statistical model 18CrMo4 steel interface morphology parameters
DOI10.1142/S175882512050009X
Indexed BySCI ; EI
Language英语
WOS IDWOS:000525349500009
WOS KeywordFINITE-ELEMENT-ANALYSIS ; PLASTIC CONTACT ; SINUSOIDAL ASPERITY ; SURFACE-ROUGHNESS ; MODAL-ANALYSIS ; STIFFNESS ; MODEL ; DEFORMATION ; PRESSURE ; AREA
WOS Research AreaMechanics
WOS SubjectMechanics
Funding ProjectNational Natural Science Foundation of China[11772334] ; National Natural Science Foundation of China[11572329] ; National Natural Science Foundation of China[11672301] ; National Key R&D Program of China[2017YFA0204402] ; Youth Innovation Promotion Association CAS[2018022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040501]
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences
ClassificationQ3
Ranking1
ContributorLiu, X. M.
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81883
Collection非线性力学国家重点实验室
Affiliation1.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China;
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100124, Peoples R China
Recommended Citation
GB/T 7714
Fan LF,Zhao L,Liu XM. Influences of Morphology Parameters on the Contact Behavior of a Steel Interface[J]. INTERNATIONAL JOURNAL OF APPLIED MECHANICS,2020,12(1):28.
APA Fan LF,Zhao L,&刘小明.(2020).Influences of Morphology Parameters on the Contact Behavior of a Steel Interface.INTERNATIONAL JOURNAL OF APPLIED MECHANICS,12(1),28.
MLA Fan LF,et al."Influences of Morphology Parameters on the Contact Behavior of a Steel Interface".INTERNATIONAL JOURNAL OF APPLIED MECHANICS 12.1(2020):28.
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