Understanding Topographic Dependence of Friction with Micro- and Nano-Grooved Surfaces
Understanding Topographic Dependence of Friction with Micro- and Nano-Grooved Surfaces
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DOI：
10.1007/s11249-013-0252-5
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发表时间：
2013
影响因子：
3.2
通讯作者：
Chengjiao Yu;Hualong Yu;Geng Liu;Wei Chen;Bo He;Q. Jane Wang
中科院分区：
文献类型：
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作者：
Chengjiao Yu;Hualong Yu;Geng Liu;Wei Chen;Bo He;Q. Jane Wang
本文报道的工作旨在了解滑动摩擦各向异性在纳米，微米和宏观尺度上的表面粗糙度取向和探索这一现象背后的机制。通过探测具有平行或垂直于相对运动方向的凹槽的表面进行实验。采用有限元法和半解析静摩擦模型进行了连续介质力学分析，并进行了原子分子动力学模拟。摩擦各向异性的理解从接触面积，表面刚度，静摩擦长度，和能量势垒从连续介质力学的前景，并从粘滑现象在原子水平上的差异。
The work reported in this paper aims at understanding sliding friction anisotropy at the nano-, micro-, and macroscales with respect to surface asperity orientation and exploring the mechanisms behind this phenomenon. Experiments were conducted by probing surfaces with grooves parallel or perpendicular to the direction of relative motion. Continuum mechanics analyses with the FEM and a semi-analytical static friction model and the atomic molecular dynamics simulation were performed for the mechanism exploration. Friction anisotropy was understood from the differences in contact area, surface stiffness, stiction length, and energy barrier from the continuum mechanics prospective and from that in the stick–slip phenomena at the atomic level.