Cylinder-flat contact mechanics with surface roughness

A. Tiwari; B. N. J. Persson

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arXiv · 2007.14793

Cylinder-flat contact mechanics with surface roughness

A. Tiwari·B. N. J. Persson

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Abstract

We study the nominal (ensemble averaged) contact pressure $p(x)$ acting on a cylinder squeezed in contact with an elastic half-space with random surface roughness. The contact pressure is Hertzian-like for $\alpha < 0.01$ and Gaussian-like for $\alpha > 10$, where the dimensionless parameter $\alpha = h_{\rm rms}/\delta$ is the ratio between the root-mean-square roughness amplitude and the penetration for the smooth surfaces case (Hertz contact).

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A. Tiwari, B. N. J. Persson. 2020-07-27. Cylinder-flat contact mechanics with surface roughness. https://arxiv.org/abs/2007.14793

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