The influence of plain bearings on shaft whirling

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dc.contributor.author E. Downham en_US
dc.date.accessioned 2014-10-21T15:54:18Z
dc.date.available 2014-10-21T15:54:18Z
dc.date.issued 1955 en_US
dc.identifier.other ARC/R&M-3046 en_US
dc.identifier.uri https://reports.aerade.cranfield.ac.uk/handle/1826.2/3615
dc.description.abstract Experiments are described which show the effects of bearing length, bearing clearance, and lubricant viscosity on the critical whirling speeds of a single-shaft rotor system supported in plain bearings. The critical speed of a two-bearing-shaft rotor system is shown to depend upon rotor unbalance for bearings of normal clearance. When the clearance is small relative to the bearing length, unsymmetric stiffness characteristics are obtained and produce two critical speeds instead of one. The lubricant in a drip-feed bearing is shown to have a stiffening effect, with consequent increase of critical whirling speed. It is also shown that the critical whirl amplitudes with dry bearings can be appreciably larger than those obtained with lubricated bearings. en_US
dc.relation.ispartofseries Aeronautical Research Council Reports & Memoranda en_US
dc.title The influence of plain bearings on shaft whirling en_US


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