Abstract
Persson's multiscale contact mechanics theory combined with a multiscale Brillouin-Prandtl-Tomlinson model is used to show that on the basis of these models “dry friction” [i.e., kinetic friction that remains at exceedingly small velocities (but still above the creep range) close to its value at higher velocities] should almost always occur for self-affine surfaces when the dominant interaction between two surfaces in contact is due to interatomic hard core repulsion, except for extremely smooth surfaces (i.e., surfaces with a Hurst index very close to 1).
Keywords
dry friction, Brillouin-Prandtl-Tomlinson model, Persson theory
Subject Categories
Surface roughness, Friction, Contact mechanics
Disciplines
Condensed Matter Physics | Physics
Publisher
American Physical Society
Publication Date
2-24-2012
Rights Information
Copyright (2012) American Physical Society.
Rights Holder
American Physical Society
Recommended Citation
Sokoloff, J. B., "Surface roughness and dry friction" (2012). Physics Faculty Publications. Paper 516.
Click button above to open, or right-click to save.
Notes
Originally published in Physical Review E v.85 (2012): 027102. DOI: 10.1103/PhysRevE.85.027102.