Influences of Morphology Parameters on the Contact Behavior of a Steel Interface

doi:10.1142/S175882512050009X

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	Influences of Morphology Parameters on the Contact Behavior of a Steel Interface
	Fan LF 1; Zhao L 1; Liu XM(刘小明)2
通讯作者	Liu, X. M.(xiaomingliu@imech.ac.cn)
发表期刊	INTERNATIONAL JOURNAL OF APPLIED MECHANICS
	2020
卷号	12 期号:1 页码:28
ISSN	1758-8251
摘要	The 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.
关键词	Sinusoidal asperities contact stiffness elastic-plastic statistical model 18CrMo4 steel interface morphology parameters
DOI	10.1142/S175882512050009X
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000525349500009
关键词[WOS]	FINITE-ELEMENT-ANALYSIS ; PLASTIC CONTACT ; SINUSOIDAL ASPERITY ; SURFACE-ROUGHNESS ; MODAL-ANALYSIS ; STIFFNESS ; MODEL ; DEFORMATION ; PRESSURE ; AREA
WOS研究方向	Mechanics
WOS类目	Mechanics
资助项目	National 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]
项目资助者	National 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
论文分区	Q3
力学所作者排名	1
RpAuthor	Liu, X. M.
引用统计	被引频次：2[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/311007/81883
专题	非线性力学国家重点实验室
作者单位	1.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China; 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100124, Peoples R China
推荐引用方式 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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