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Elastohydrodynamics of lip seals
Author(s) -
Salant Richard F.,
Flaherty Andrew L.
Publication year - 1995
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010080103
Subject(s) - seal (emblem) , leakage (economics) , materials science , mechanics , geology , mechanical engineering , engineering drawing , engineering , art , physics , macroeconomics , economics , visual arts
A numerical elastohydrodynamic analysis of a rotary lip seal with microundulations reveals that the undulation pattern plays a central role in the operation of the seal. The undulations hydrodynamically generate elevated pressures within the lubricating film, providing load support, and deform in such a manner as to produce reverse pumping. The reverse pumping counteracts the flow induced by the sealed pressure, and thereby prevents leakage through the seal. See p. 25 for the nomenclature.