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

doi:10.1016/j.triboint.2021.107230

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

	Effect of plasticity and adhesion on the stick-slip transition at nanoscale friction
	Hu JQ(胡剑桥)2,3; Liu XM(刘小明)2,3; Wei YG(魏悦广)1
刊名	TRIBOLOGY INTERNATIONAL
	2021-12-01
卷号	164 页码:8
关键词	Stick-slip transition Adhesion and plasticity Critical shear stress Thermal effect Molecular dynamics simulation
ISSN号	0301-679X
DOI	10.1016/j.triboint.2021.107230
通讯作者	Liu, Xiaoming(xiaomingliu@imech.ac.cn)
英文摘要	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.
分类号	一类
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]
WOS关键词	DISLOCATION NUCLEATION ; MOLECULAR-DYNAMICS ; MODEL ; LAW ; SIMULATIONS ; INSTABILITY ; SCRATCH ; ONSET ; STATE
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000697775700002
资助机构	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
其他责任者	Liu, Xiaoming
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87459]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Peking Univ, Coll Engn, Beijing 100871, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, 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.