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@ARTICLE{Persson:201812,
author = {Persson, Bo and Prodanov, N. and Krick, B. A. and
Rodriguez, N. and Mulakaluri, N. and Sawyer, W. G. and
Mangiagalli, P.},
title = {{E}lastic contact mechanics: {P}ercolation of the contact
area and fluid squeeze-out},
journal = {The European physical journal / E},
volume = {35},
number = {1},
issn = {1292-895X},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2015-04106},
pages = {5},
year = {2012},
abstract = {The dynamics of fluid flow at the interface between elastic
solids with rough surfaces depends sensitively on the area
of real contact, in particular close to the percolation
threshold, where an irregular network of narrow flow
channels prevails. In this paper, numerical simulation and
experimental results for the contact between elastic solids
with isotropic and anisotropic surface roughness are
compared with the predictions of a theory based on the
Persson contact mechanics theory and the Bruggeman effective
medium theory. The theory predictions are in good agreement
with the experimental and numerical simulation results and
the (small) deviation can be understood as a finite-size
effect. The fluid squeeze-out at the interface between
elastic solids with randomly rough surfaces is studied. We
present results for such high contact pressures that the
area of real contact percolates, giving rise to sealed-off
domains with pressurized fluid at the interface. The
theoretical predictions are compared to experimental data
for a simple model system (a rubber block squeezed against a
flat glass plate), and for prefilled syringes, where the
rubber plunger stopper is lubricated by a high-viscosity
silicon oil to ensure functionality of the delivery device.
For the latter system we compare the breakloose (or static)
friction, as a function of the time of stationary contact,
to the theory prediction.},
cin = {IAS-1 / PGI-1},
ddc = {530},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
pnm = {424 - Exploratory materials and phenomena (POF2-424)},
pid = {G:(DE-HGF)POF2-424},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000300556600005},
doi = {10.1140/epje/i2012-12005-2},
url = {https://juser.fz-juelich.de/record/201812},
}