Superlubricity in granular shear flows under external vibrations
Abstract
, the macroscopic friction is less than 0.01, if one of the bumpy planes oscillates with a sufficiently large velocity amplitude. We quantify the reduction in the energy dissipated by the system through the work of the shear stress induced by the reduction in macroscopic friction and the external energy required to make the bumpy plane oscillate for different combinations of amplitude and frequency, and imposed pressure. We propose a phase diagram and criteria in terms of imposed pressure and velocity amplitude of oscillations to predict the resistance to shear.
Fields of Study & Subjects
Granular flow and fluidized beds
Particle Dynamics in Fluid Flows
Brake Systems and Friction Analysis
Publication details
- Journal / source
- Soft Matter
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 22
- Issue
- 23
- Pages
- 3984–3988
- Publication date
- 1 January 2026
- Language
- EN