Journal Article

PreJuSER-7381

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On the transition from boundary lubrication to hydrodynamic lubrication in soft contacts

Persson, B. N. J.FZJ* ; Scaraggi, M.FZJ*

2009
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/0953-8984/21/18/185002

Abstract: We consider the contact between elastically soft solids with randomly rough surfaces in sliding contact in a fluid, which is assumed to be Newtonian with constant (pressure-independent) viscosity. We discuss the nature of the transition from boundary lubrication at low sliding velocity, where direct solid-solid contact occurs, to hydrodynamic lubrication at high sliding velocity, where the solids are separated by a thin fluid film. We consider both hydrophilic and hydrophobic systems, and cylinder-on-flat and sphere-on-flat sliding configurations. We show that, for elastically soft solids such as rubber, including cavitation or not results in nearly the same friction.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)

Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2009

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