Journal Article

FZJ-2020-01887

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lubricated sliding friction: Role of interfacial fluid slip and surface roughness

Rotella, C. ; Persson, B. (Corresponding author)FZJ* ; Scaraggi, M.FZJ* ; Mangiagalli, P.

2020
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/24799  doi:10.1140/epje/i2020-11933-4

Abstract: 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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Quanten-Theorie der Materialien (IAS-1)

Research Program(s):

1. 141 - Controlling Electron Charge-Based Phenomena (POF3-141) (POF3-141)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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