Sliding contact creates universal self-affine fractal surfaces
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866910275930685440 |
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| author | Xu, Ruibin Ren, Haohao Clerc, Adriane Mollon, Guilhem Sheng, Wenbo Zhou, Feng Persson, B. N. J. |
| author_facet | Xu, Ruibin Ren, Haohao Clerc, Adriane Mollon, Guilhem Sheng, Wenbo Zhou, Feng Persson, B. N. J. |
| contents | Surface roughness evolves during sliding, a process known as run-in, and the resulting topography controls friction, leakage, and failure from machines to geological faults. Yet the physical rule selecting this state remains unclear. We show that metals, rocks, and glasses develop universal self-similar roughness at short wavelengths, while retaining a material-dependent roll-off. A two-process model explains this behavior: junction formation and rupture drive universal roughening, whereas larger-scale deformation and/or fracture limit its growth. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2606_00626 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Sliding contact creates universal self-affine fractal surfaces Xu, Ruibin Ren, Haohao Clerc, Adriane Mollon, Guilhem Sheng, Wenbo Zhou, Feng Persson, B. N. J. Soft Condensed Matter Materials Science Statistical Mechanics Classical Physics Surface roughness evolves during sliding, a process known as run-in, and the resulting topography controls friction, leakage, and failure from machines to geological faults. Yet the physical rule selecting this state remains unclear. We show that metals, rocks, and glasses develop universal self-similar roughness at short wavelengths, while retaining a material-dependent roll-off. A two-process model explains this behavior: junction formation and rupture drive universal roughening, whereas larger-scale deformation and/or fracture limit its growth. |
| title | Sliding contact creates universal self-affine fractal surfaces |
| topic | Soft Condensed Matter Materials Science Statistical Mechanics Classical Physics |
| url | https://arxiv.org/abs/2606.00626 |