In-situ measurements of contact evolution for fractal rough surfaces under normal compression

doi:10.1016/j.ijsolstr.2024.112841

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	In-situ measurements of contact evolution for fractal rough surfaces under normal compression
	Huang, Shaoqi 8; Wei, Deheng 5,6,7; Han, Wenwen 8; Song, Hengxu 3,4; Song, Siyang 8; Gan, Yixiang 2,6; Zhai, Chongpu 1,8; Xu, Minglong 8
刊名	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2024-07-01
卷号	297 页码:15
关键词	Surface roughness Contact creep Fractal dimension Interfacial separation distance Contact area
ISSN号	0020-7683
DOI	10.1016/j.ijsolstr.2024.112841
通讯作者	Zhai, Chongpu(zhaichongpu@xjtu.edu.cn) ; Xu, Minglong(mlxu@mail.xjtu.edu.cn)
英文摘要	The contact interface plays a key role in the overall functionality and stability of structures. Understanding the evolution of the contact interface over time and its dependency on materials and load is crucial for functional integrity and operational safety assessment. In this study, we employ in-situ three-dimensional X-ray computed tomography (3DXRCT) to examine the creep behavior of 3D-printed surfaces exhibiting various roughness under constant normal compression. We observe that the overall contact area enlargement during the contact creep decreases with roughness amplitude and fractal dimension. The variation of interfacial separation distance is found to increase with roughness amplitude and decrease with fractal dimension. Correlation analysis reveals that the microcontact size played a more important role than the asperity shape in determining the microcontact enlargement. By examining the calculated interfacial strains extracted from XRCT measurements, significant deformations are found to occur at the non-contacting zones, indicating strong asperity interactions. This study offers high-resolution experimental measurements and unravels the asperity micromechanics for contact creep on rough surfaces, providing insights into understanding and optimizing the performance of rough interfaces.
资助项目	National Natural Science Foundation of China (NSFC)[12202342] ; Xian Jiaotong University[LX6J018] ; Xian Jiaotong University[XZY012021003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620101]
WOS关键词	DIGITAL VOLUME CORRELATION ; ASPERITY INTERACTIONS ; DIMENSION ; BEHAVIOR ; MODEL ; CREEP ; STIFFNESS ; TEMPERATURE ; FRICTION ; STYLUS
WOS研究方向	Mechanics
语种	英语
WOS记录号	WOS:001235964600001
资助机构	National Natural Science Foundation of China (NSFC) ; Xian Jiaotong University ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/95489]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Zhai, Chongpu; Xu, Minglong
作者单位	1.Xi An Jiao Tong Univ, Sch Aerosp Engn, Shanxi Key Lab Vibrat & Control Aerosp Struct, Xian 710049, Peoples R China 2.Univ Sydney, Sydney Nano Inst, Sydney, NSW 2006, Australia 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 5.Rhein Westfal TH Aachen, Inst Geomech & Underground Technol, Mies van der Rohe Str 1, D-52074 Aachen, Germany 6.Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia 7.Northeastern Univ, Sch Resources & Civil Engn, Key Lab, Minist Educ Safe Min Deep Mines, Shenyang 110819, Peoples R China 8.Xi An Jiao Tong Univ, Sch Aerosp Engn, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Huang, Shaoqi,Wei, Deheng,Han, Wenwen,et al. In-situ measurements of contact evolution for fractal rough surfaces under normal compression[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2024,297:15.
APA	Huang, Shaoqi.,Wei, Deheng.,Han, Wenwen.,Song, Hengxu.,Song, Siyang.,...&Xu, Minglong.(2024).In-situ measurements of contact evolution for fractal rough surfaces under normal compression.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,297,15.
MLA	Huang, Shaoqi,et al."In-situ measurements of contact evolution for fractal rough surfaces under normal compression".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 297(2024):15.