Next Article in Journal
Squeeze Flow of Bingham Fluids through Reticulated, Compressed Foams
Previous Article in Journal
Polymer Brush Friction in Cylindrical Geometries
Previous Article in Special Issue
Fretting Behavior of Thermoplastic Polyurethanes
Open AccessArticle

A Discussion on Present Theories of Rubber Friction, with Particular Reference to Different Possible Choices of Arbitrary Roughness Cutoff Parameters

1
Department of Industrial Engineering, University of Naples Federico II, Via Claudio, 21-80125 Naples, Italy
2
Department of Mechanics, Mathematics and Management, Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy
3
Department of Mechanical Engineering, Hamburg University of Technology, Am Schwarzenberg-Campus 1, 21073 Hamburg, Germany
*
Author to whom correspondence should be addressed.
Lubricants 2019, 7(10), 85; https://doi.org/10.3390/lubricants7100085
Received: 24 July 2019 / Revised: 19 September 2019 / Accepted: 24 September 2019 / Published: 26 September 2019
(This article belongs to the Special Issue Adhesion, Friction and Lubrication of Viscoelastic Materials)
Since the early study by Grosch in 1963 it has been known that rubber friction shows generally two maxima with respect to speed—the first one attributed to adhesion, and another at higher velocities attributed to viscoelastic losses. The theory of Klüppel and Heinrich and that of Persson suggests that viscoelastic losses crucially depend on the “multiscale” aspect of roughness and in particular on truncation at fine scales. In this study, we comment a little on both theories, giving some examples using Persson’s theory on the uncertainties involved in the truncation of the roughness spectrum. It is shown how different choices of Persson’s model parameters, for example the high-frequency cutoff, equally fit experimental data on viscoelastic friction, hence it is unclear how to rigorously separate the adhesive and the viscoelastic contributions from experiments. View Full-Text
Keywords: rubber friction; viscoelasticity; roughness rubber friction; viscoelasticity; roughness
Show Figures

Graphical abstract

MDPI and ACS Style

Genovese, A.; Farroni, F.; Papangelo, A.; Ciavarella, M. A Discussion on Present Theories of Rubber Friction, with Particular Reference to Different Possible Choices of Arbitrary Roughness Cutoff Parameters. Lubricants 2019, 7, 85.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop