Interfacial separation between elastic solids with randomly rough surfaces: comparison of experiment with theory
Interfacial separation between elastic solids with randomly rough surfaces: comparison of experiment with theory
复制标题
具有随机粗糙表面的弹性固体之间的界面分离：实验与理论的比较
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
B. Persson
中科院分区：
文献类型：
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作者：
B. Lorenz;B. Persson
我们研究具有名义上平坦但随机粗糙表面的弹性固体和硬固体之间的平均分离，作为挤压压力的函数。我们展示了具有平坦表面的硅橡胶（PDMS）块挤压在沥青路面上的实验结果。该理论表明，有效排斥压力作用于 p∼exp(−u/u0) 形式的表面之间，其中 u 是表面之间的平均间距，u0 是均方根粗糙度量级的常数，与实验结果非常吻合。
We study the average separation between an elastic solid and a hard solid, with a nominally flat but randomly rough surface, as a function of the squeezing pressure. We present experimental results for a silicon rubber (PDMS) block with a flat surface squeezed against an asphalt road surface. The theory shows that an effective repulsive pressure acts between the surfaces of the form p∼exp(−u/u0), where u is the average separation between the surfaces and u0 a constant of the order of the root-mean-square roughness, in good agreement with the experimental results.