| Autor: |
GAO Jiawei, YAO Tingqiang, XIE Jiachen, LI Tingtao, HUO Jilu |
| Předmět: |
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| Zdroj: |
Journal of Materials Science & Engineering (1673-2812); Feb2024, Vol. 42 Issue 1, p69-75, 7p |
| Abstrakt: |
The dry friction mechanism is studied from the perspective of shear motion between nanoscale micro-convex bodies. Considering the influence of adhesion force, atomic transfer and interaction between convex bodies in the contact process of homogeneous elastic materials on the nano-adhesive friction contact process, the frictional response of the contact between a single-crystal copper elastic scratch head and an elastic multi-convex substrate under nanometer conditions is studied by molecular dynamics methods, and the friction law and contact deformation mechanism of the continuous contact between the elastic scratch head and the multi-convex substrate are analyzed. The results show that: The differences in lattice orientation lead to different degrees of wear between convex bodies, and the friction coefficient decreases with increasing lattice angle; The friction coefficient was found to decrease with increasing lattice angle under controlled temperature conditions; The analysis of the velocity for different convex body radius shows that the increase in velocity has a certain friction reduction effect; Since the multi-convex body model considers the effect of inter-convex body interactions on material deformation and failure, it is found that different resistance to scratching and deformation is exhibited under different operating conditions, and the elastic scratching head as well as inter-convex body interactions have important effects on the nano-adhesive friction characteristics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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