TY  - JOUR
AU  - Rotella, C.
AU  - Persson, Bo
AU  - Scaraggi, M.
AU  - Mangiagalli, P.
TI  - Lubricated sliding friction: Role of interfacial fluid slip and surface roughness
JO  - The European physical journal / E Soft matter E
VL  - 43
IS  - 2
SN  - 1292-895X
CY  - Heidelberg
PB  - Springer
M1  - FZJ-2020-01887
SP  - 9
PY  - 2020
AB  - We derive approximate mean field equations for the fluid flow between elastic solids with randomly rough surfaces including interfacial fluid slip and shear thinning. We present numerical results for the fluid flow and friction factors for realistic systems, in particular, we consider the case of an elastic cylinder with random surface roughness in relative sliding contact with a flat rigid (low-energy) counter-surface. We present experimental data for the sliding friction between rubber stoppers and glass barrels lubricated with baked-on silicone oil. We find that the frictional shear stress acting in the rubber asperity contact regions is nearly velocity independent for velocities in the 10-1000μm/s range, and very small τf≈0.04 MPa, while for bare glass in silicone oil τf is much larger and velocity dependent.
LB  - PUB:(DE-HGF)16
C6  - pmid:32025872
UR  - <Go to ISI:>//WOS:000518981100001
DO  - DOI:10.1140/epje/i2020-11933-4
UR  - https://juser.fz-juelich.de/record/875238
ER  -