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

文献类型：期刊论文

作者Fan LF2; Zhao L2; Liu XM(刘小明)1
刊名INTERNATIONAL JOURNAL OF APPLIED MECHANICS
出版日期2020
卷号12期号:1页码:28
关键词Sinusoidal asperities contact stiffness elastic-plastic statistical model 18CrMo4 steel interface morphology parameters
ISSN号1758-8251
DOI10.1142/S175882512050009X
通讯作者Liu, X. M.(xiaomingliu@imech.ac.cn)
英文摘要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.
分类号Q3
WOS关键词FINITE-ELEMENT-ANALYSIS ; PLASTIC CONTACT ; SINUSOIDAL ASPERITY ; SURFACE-ROUGHNESS ; MODAL-ANALYSIS ; STIFFNESS ; MODEL ; DEFORMATION ; PRESSURE ; AREA
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]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000525349500009
资助机构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
其他责任者Liu, X. M.
源URL[http://dspace.imech.ac.cn/handle/311007/81882]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100124, Peoples R China
2.Beijing Univ Technol, Coll Architecture & Civil Engn, 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.

入库方式： OAI收割

来源：力学研究所

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