Details
| Original language | English |
|---|---|
| Title of host publication | BHR Group - 22nd International Conference on Fluid Sealing 2013 |
| Pages | 147-159 |
| Number of pages | 13 |
| ISBN (electronic) | 9781632668578 |
| Publication status | Published - 2013 |
| Event | 22nd International Conference on Fluid Sealing 2013 - Dusseldorf, Germany Duration: 3 Dec 2013 → 4 Dec 2013 |
Publication series
| Name | BHR Group - 22nd International Conference on Fluid Sealing 2013 |
|---|
Abstract
A finite element-based deterministic multi-scale soft micro-elastohydrodynamic radial lip seal lubrication model has been set up comprising finite deformations of the elastomer surface asperities, inter-asperity cavitation and coupling of frictional heating, lubricant film temperature and lubricant viscosity. This lubrication approach essentially relies on the assumption that the lubrication of soft rough surfaces can be described by micro- or submieron-scale soft elastohydrodynamic (soft-EHL, i.e. isoviscous-clastic) lubrication at the asperity level. The overall friction thus entirely originates from the lubricant: in addition to the viscous friction contribution of the oil-filled surface roughness (meso-scale), viscous shear stresses resulting from the thin under-asperity soft-EHL oil films (submicron-scale) contribute significantly to the overall friction. The lubrication model is set up using the FEM-based multiphysics code ELMER utilizing a hydrodynamically representative sinusoidal roughness model based on the measured micro-geometry of the seal lip surface. The computed seal friction agrees well with experimental results. Moreover, this revisited soft micro EHL mixed lubrication approach is obviously capable of giving a physically sound explanation of both lubricant film formation as well as the frictional characteristics of lubricated soft rough surfaces.
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Mechanics of Materials
- Chemical Engineering(all)
- Process Chemistry and Technology
- Materials Science(all)
- General Materials Science
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BHR Group - 22nd International Conference on Fluid Sealing 2013. 2013. p. 147-159 (BHR Group - 22nd International Conference on Fluid Sealing 2013).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Revisiting soft micro-elastohydrodynamic lubrication
T2 - 22nd International Conference on Fluid Sealing 2013
AU - Wennehorst, B.
AU - Poll, G. W.G.
N1 - Publisher Copyright: © BHR Group 2013.
PY - 2013
Y1 - 2013
N2 - A finite element-based deterministic multi-scale soft micro-elastohydrodynamic radial lip seal lubrication model has been set up comprising finite deformations of the elastomer surface asperities, inter-asperity cavitation and coupling of frictional heating, lubricant film temperature and lubricant viscosity. This lubrication approach essentially relies on the assumption that the lubrication of soft rough surfaces can be described by micro- or submieron-scale soft elastohydrodynamic (soft-EHL, i.e. isoviscous-clastic) lubrication at the asperity level. The overall friction thus entirely originates from the lubricant: in addition to the viscous friction contribution of the oil-filled surface roughness (meso-scale), viscous shear stresses resulting from the thin under-asperity soft-EHL oil films (submicron-scale) contribute significantly to the overall friction. The lubrication model is set up using the FEM-based multiphysics code ELMER utilizing a hydrodynamically representative sinusoidal roughness model based on the measured micro-geometry of the seal lip surface. The computed seal friction agrees well with experimental results. Moreover, this revisited soft micro EHL mixed lubrication approach is obviously capable of giving a physically sound explanation of both lubricant film formation as well as the frictional characteristics of lubricated soft rough surfaces.
AB - A finite element-based deterministic multi-scale soft micro-elastohydrodynamic radial lip seal lubrication model has been set up comprising finite deformations of the elastomer surface asperities, inter-asperity cavitation and coupling of frictional heating, lubricant film temperature and lubricant viscosity. This lubrication approach essentially relies on the assumption that the lubrication of soft rough surfaces can be described by micro- or submieron-scale soft elastohydrodynamic (soft-EHL, i.e. isoviscous-clastic) lubrication at the asperity level. The overall friction thus entirely originates from the lubricant: in addition to the viscous friction contribution of the oil-filled surface roughness (meso-scale), viscous shear stresses resulting from the thin under-asperity soft-EHL oil films (submicron-scale) contribute significantly to the overall friction. The lubrication model is set up using the FEM-based multiphysics code ELMER utilizing a hydrodynamically representative sinusoidal roughness model based on the measured micro-geometry of the seal lip surface. The computed seal friction agrees well with experimental results. Moreover, this revisited soft micro EHL mixed lubrication approach is obviously capable of giving a physically sound explanation of both lubricant film formation as well as the frictional characteristics of lubricated soft rough surfaces.
UR - http://www.scopus.com/inward/record.url?scp=84909999576&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84909999576
T3 - BHR Group - 22nd International Conference on Fluid Sealing 2013
SP - 147
EP - 159
BT - BHR Group - 22nd International Conference on Fluid Sealing 2013
Y2 - 3 December 2013 through 4 December 2013
ER -