| 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
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| Corresponding Author | Liu, Xiaoming(xiaomingliu@imech.ac.cn) |
| Source Publication | TRIBOLOGY INTERNATIONAL
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| 2021-12-01 | |
| Volume | 164Pages:8 |
| ISSN | 0301-679X |
| Abstract | 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. |
| Keyword | Stick-slip transition Adhesion and plasticity Critical shear stress Thermal effect Molecular dynamics simulation |
| DOI | 10.1016/j.triboint.2021.107230 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000697775700002 |
| WOS Keyword | DISLOCATION NUCLEATION ; MOLECULAR-DYNAMICS ; MODEL ; LAW ; SIMULATIONS ; INSTABILITY ; SCRATCH ; ONSET ; STATE |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Mechanical |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Liu, Xiaoming |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87460 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F397.pdf（5926KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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