Open AccessMagnetic bearing update
Author(s) -
T.K. Fowler
Publication year - 1995
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/135052
Subject(s) - bearing (navigation) , magnetic bearing , instability , tilt (camera) , viscosity , mode (computer interface) , physics , mechanics , engineering , mechanical engineering , computer science , thermodynamics , magnet , astronomy , operating system
Stabilization of whirl instability by floppy, viscous bearing mounts is discussed and required material properties are estimated for the new tilt-whirl mode in eddy-current stabilized magnetic bearings. A relatively low Young`s modules Y {approximately} 10{sup 5} and high viscosity {zeta} {approximately} 10{sup 7} are required (both in MKS units), suggesting the need for careful mounting design. New information on periodic bearings shows that, thus far, Earshaw`s Theorem cannot be defeated by periodicity, despite the author`s earlier claims
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