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Simulation of a hydraulic rod seal with a textured rod and starvation

A numerical analysis of a reciprocating hydraulic rod seal with a textured rod has been performed. The sealed pressure during the instroke is elevated, while that during the outstroke is atmospheric. The analysis consists of coupled fluid mechanics, contact mechanics and load support analyses, and t...

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Published in:Tribology international 2016-03, Vol.95, p.306-315
Main Authors: Huang, Yuli, Salant, Richard F.
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Language:English
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description A numerical analysis of a reciprocating hydraulic rod seal with a textured rod has been performed. The sealed pressure during the instroke is elevated, while that during the outstroke is atmospheric. The analysis consists of coupled fluid mechanics, contact mechanics and load support analyses, and takes account of starvation. The fluid transport, friction force, film thickness distribution, contact pressure distribution and fluid pressure distribution in the sealing zone have been computed for a polyurethane U-cup seal. Starvation during the instroke dominates the seal behavior at moderate to high rod speeds. The results indicate the friction force exerted on the rod by the seal cannot be significantly reduced by texturing the rod, and could even be slightly increased. •Coupled fluid mechanics, contact mechanics and load support analyses.•Friction force on rod cannot be significantly reduced by texturing rod.•Seal behavior dominated by starvation.
doi_str_mv 10.1016/j.triboint.2015.11.024
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source ScienceDirect Freedom Collection 2022-2024
subjects Atmospherics
Computational fluid dynamics
Elastomeric seals
Fluid flow
Friction
Hydraulics
Reciprocating
Reciprocating seals
Seals
Starvation
Stress concentration
Texture
title Simulation of a hydraulic rod seal with a textured rod and starvation
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