Distribution of Gaps and Adhesive Interaction Between Contacting Rough Surfaces

Distribution of Gaps and Adhesive Interaction Between Contacting Rough Surfaces
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接触粗糙表面之间的间隙分布和粘合相互作用

DOI:
10.1007/s11249-021-01454-6
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发表时间:
2021
期刊:
影响因子:
3.2
通讯作者:
Pastewka, Lars
Pastewka, Lars
中科院分区:
工程技术2区
文献类型:
--
作者:
Monti, Joseph M.;Sanner, Antoine;Pastewka, Lars

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了解接触粗糙表面之间的界面分离的分布是不可或缺的,为它们之间的粘附力提供定量估计。假设自仿射曲面的非粘性、无摩擦接触,我们推导出接触边附近曲面间的间距分布。该分布表现出幂律发散的小差距,我们使用数值模拟与精细的分辨率,以确认缩放。幂律状态持续存在的特征长度尺度由均方根表面斜率和接触区域的平均直径的乘积给出。我们表明,这些结果仍然有效的弱粘附接触,并将这些观察粗糙表面之间的粘附最近的理论。
Understanding the distribution of interfacial separations between contacting rough surfaces is integral for providing quantitative estimates for adhesive forces between them. Assuming non-adhesive, frictionless contact of self-affine surfaces, we derive the distribution of separations between surfaces near the contact edge. The distribution exhibits a power-law divergence for small gaps, and we use numerical simulations with fine resolution to confirm the scaling. The characteristic length scale over which the power-law regime persists is given by the product of the rms surface slope and the mean diameter of contacting regions. We show that these results remain valid for weakly adhesive contacts and connect these observations to recent theories for adhesion between rough surfaces.
DOI: 10.1007/s11340-021-00733-6
发表时间: 2021-07
影响因子: 2.4
作者:
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