Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction

doi:10.1016/j.triboint.2021.107230

IMECH-IR > 非线性力学国家重点实验室

	Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction
	Hu JQ(胡剑桥)1,2; Liu XM(刘小明)1,2 ; Wei YG(魏悦广)3
通讯作者	Liu, Xiaoming(xiaomingliu@imech.ac.cn)
发表期刊	TRIBOLOGY INTERNATIONAL
	2021-12-01
卷号	164 页码:8
ISSN	0301-679X
摘要	When an external force is suddenly applied to the material interface, how much the critical force is required for the onset of slip? To answer this, we used molecular simulations to study the slip initiation during a nano-scratch. The shear load is applied by a very soft spring to achieve the constant force boundary. Using this model, we studied how much plasticity and adhesion affect the critical shear load. Results show that the slip initiation depends on contact depth because the dominated factor for stick-slip changes from interfacial adhesion in shallow contact to dislocation plasticity in deep contact. Also, the initiation stress of slip depends on temperature; the critical shear stress follows a temperature dependence of similar to TlnT when dislocation plasticity prevails.
关键词	Stick-slip transition Adhesion and plasticity Critical shear stress Thermal effect Molecular dynamics simulation
DOI	10.1016/j.triboint.2021.107230
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000697775700002
关键词[WOS]	DISLOCATION NUCLEATION ; MOLECULAR-DYNAMICS ; MODEL ; LAW ; SIMULATIONS ; INSTABILITY ; SCRATCH ; ONSET ; STATE
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
资助项目	National Natural Science Foundation of China-Basic Science Center Program[11988102] ; National Natural Science Foundation of China[11802310] ; National Natural Science Foundation of China[11972347] ; National Natural Science Foundation of China[11772334] ; National Natural Science Foundation of China[12022210] ; National Natural Science Foundation of China[12032001] ; 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-Basic Science Center Program ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	一类
力学所作者排名	1
RpAuthor	Liu, Xiaoming
引用统计	被引频次：9[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/311007/87460
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Hu JQ,Liu XM,Wei YG. Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction[J]. TRIBOLOGY INTERNATIONAL,2021,164:8.
APA	胡剑桥,刘小明,&魏悦广.(2021).Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction.TRIBOLOGY INTERNATIONAL,164,8.
MLA	胡剑桥,et al."Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction".TRIBOLOGY INTERNATIONAL 164(2021):8.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2021F397.pdf（5926KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载