https://doi.org/10.1051/epjconf/202124908003
The effect of liquid viscosity on sliding friction coefficient of wet granular materials
1
Complex Systems Laboratory, Physics Department, Alzahra University, P.O. Box 1993891176, Tehran, Iran
2
Physics Department, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran
* Corresponding author: m.asgary@alzahra.ac.ir
Published online: 7 June 2021
The mechanical properties of wet granular materials are different to those of dry granular matter. If the wet granular medium is not completely saturated, the capillary bridges form and the surface tension changes the elastic properties of the medium. We studied the sliding friction of a sledge over wet granular media and found that surface tension and viscosity have crucial effect on the dynamic friction coefficient of the wet granular media. Higher the viscosity of the interstitial liquid results in higher dynamic friction coefficient. Furthermore, viscous interstitial liquid shows time dependency behaviour. Viscosity makes the friction coefficient to increase since causes more the energy loss.
A video is available at https://doi.org/10.48448/p9q7-3t04
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
