On the viscous dissipation caused by randomly rough indenters in smooth sliding motion

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Date
2021
Volume
6
Issue
Journal
Series Titel
Book Title
Publisher
Amsterdam : Elsevier
Abstract

The viscous dissipation between rigid, randomly rough indenters and linearly elastic counter bodies sliding past them is investigated using Green’s function molecular dynamics. The study encompasses a variety of models differing in the height spectra properties of the rigid indenter, in the viscoelasticity of the elastomer, and in their interaction. All systems reveal the expected damping linear in sliding velocity at small and a pronounced maximum at intermediate . Persson’s theory of rubber friction, which is adopted to the studied model systems, reflects all observed trends. However, close quantitative agreement is only found up to intermediate sliding velocities. Relative errors in the friction force become significant once the contact area is substantially reduced by sliding.

Description
Keywords
Green's function molecular dynamics, Rubber friction, Theory, Viscoelasticity
Citation
Sukhomlinov, S., & Müser, M. H. (2021). On the viscous dissipation caused by randomly rough indenters in smooth sliding motion. 6. https://doi.org//10.1016/j.apsadv.2021.100182
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License
CC BY-NC-ND 4.0 Unported