4.8 Article

What is the origin of macroscopic friction?

期刊

SCIENCE ADVANCES
卷 4, 期 12, 页码 -

出版社

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aav2268

关键词

-

资金

  1. JSPS KAKENHI [JP17H05320, JP15H01145, JP15H02147]
  2. Excellent Young Researchers at The University of Tokyo

向作者/读者索取更多资源

What is the origin of molecular friction, and how can macroscopic friction be explained in terms of molecular friction? To elucidate the origins of molecular and macroscopic friction, we conducted density functional theory calculations and double-direct shear tests at normal stresses ranging from 5 to 60 MPa formica surfaces. Frictional forces between mica surfaces were theoretically predicted to oscillate periodically every 30 degrees of sliding direction, in agreement with previous experimental findings. This result affirms that the potential energy roughness of mica under sliding is the origin of molecular friction, which depends on the normal stress and sliding direction. The discovered mechanism of molecular friction can quantitatively explain experimentally observed macroscopic friction of mica when the presence of wear particles is taken into consideration.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据