Dependence of the Coefficient of Friction on the Sliding Conditions in the High Velocity Range
- 1 January 1999
- journal article
- Published by ASME International in Journal of Tribology
- Vol. 121 (1), 35-41
- https://doi.org/10.1115/1.2833808
Abstract
The velocity, normal pressure, and slider size dependence of the coefficient of dry friction of metals in the range of high sliding velocities (V ≥ 1 m/s) is investigated theoretically. Failure of the adhesive junctions by adiabatic shear banding is considered as the underlying process. The concept of asperity shearing by the adiabatic shear banding mechanism represents a new approach to unlubricated high velocity friction. Analytical solutions of a coupled thermomechanical problem are given for two constitutive relations. Numerical solutions for steel-on-steel friction showing a decrease of the coefficient of friction with the sliding velocity for different normal pressures are presented. The model is considered to be adequate in the velocity range of 1–10 m/s where friction enhanced oxidation or surface melting are believed not to interfere with the asperity shearing process.Keywords
This publication has 11 references indexed in Scilit:
- A model for friction in quasi-steady-state sliding part I. DerivationWear, 1991
- Shear Band AnalysisSolid State Phenomena, 1991
- The effects of sliding conditions on the dry friction of metalsActa Metallurgica, 1989
- Analytical Characterization of Shear Localization in Thermoviscoplastic MaterialsJournal of Applied Mechanics, 1987
- Overview no. 55 Wear-Mechanism mapsActa Metallurgica, 1987
- On critical conditions for shear band formation at high strain ratesScripta Metallurgica, 1984
- An energy-based model of friction and its application to coated systemsWear, 1981
- Plastic deformation and sliding friction of metalsWear, 1979
- Laws for Work-Hardening and Low-Temperature CreepJournal of Engineering Materials and Technology, 1976
- The latent energy remaining in a metal after cold workingProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1934