Analysis of Stability of Externally Pressurized, Gas Lubricated Floating Bush Journal Bearings

概要

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The threshold speed of whirl instability induced in an externally pressurized, gas lubricated floating bush journal bearing is analyzed theoretically with regard to the effect of rotation of the bush. The authors' previous reports presented at the 4th and 5th Gas Bearing Symposium, the Univ. of Southampton, U. K. , are revised and supplemented in relation to that effect. The following facts are found anew ; (1) Rotation of the bush in the same direction as the journal produces a reduction in the whirl threshold speed. (2) Rotation of the bush at a low speed in the reverse direction produces an increase in the threshold speed, but its rotation at an excessive speed in this direction produces a drastic reduction in that because of the occurrence of a backward precession.
一般社団法人日本機械学会の論文