Surface effects on nano-contact based on surface energy density

doi:10.1007/s00419-021-02001-4

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	Surface effects on nano-contact based on surface energy density
	Wang, Lihong 1,2; Wang, Liyuan 1; Han, Hongjun 1; Han, Wei 1; Wang, Yu 1
刊名	ARCHIVE OF APPLIED MECHANICS
	2021-10
卷号	91 期号:10 页码:4179-4190
关键词	Nano-contact Surface effect Surface energy density Normal triangle distribution force Fourier integral transform method
ISSN号	0939-1533
DOI	10.1007/s00419-021-02001-4
英文摘要	In this paper, the two-dimensional nano-contact problem with the surface effect is systematically investigated based on Chen-Yao's surface elastic theory. The Fourier integral transform method is adopted to derive the contact stress and displacement fields of a half-space subjected to a normal triangle distribution force. The theoretical result shows that the surface energy density of the indented bulk substrate, as only one additional parameter, serves as an important factor to influence the contact properties in contrast to the classical contact models. The numerical show that only when the ratio of the contact width to the volume surface energy density to the shear modulus is equal, the difference between the theoretical prediction of surface effect and the classical contact solution without surface effect will be significant. This result indicates that when the surface effect is considered and the surface effect parameter is positive, the semi-infinite substrate will harden, which should be helpful for better understanding the size-dependent mechanisms of surface energy density at nanoscale.
WOS研究方向	Mechanics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000661387200002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148727]
专题	兰州理工大学
作者单位	1.Lanzhou Technol & Business Coll, Lanzhou 730101, Peoples R China; 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lihong,Wang, Liyuan,Han, Hongjun,et al. Surface effects on nano-contact based on surface energy density[J]. ARCHIVE OF APPLIED MECHANICS,2021,91(10):4179-4190.
APA	Wang, Lihong,Wang, Liyuan,Han, Hongjun,Han, Wei,&Wang, Yu.(2021).Surface effects on nano-contact based on surface energy density.ARCHIVE OF APPLIED MECHANICS,91(10),4179-4190.
MLA	Wang, Lihong,et al."Surface effects on nano-contact based on surface energy density".ARCHIVE OF APPLIED MECHANICS 91.10(2021):4179-4190.