Abstract
This paper presents a study for the self-excited whirl of Herring-bone grooved gas journal bearings. A comparison of the stability between the conical mode and the cylindrical mode is theoretically carried out for the experimental rotating system. These theoretical predictions are experimentally verified by measuring the whirl attitude. It is confirmed that the conical mode is more stbale. Also the characteristics of the self-excited whirl, such as the stability limit and the whirl frequency are measured, and these results are compared with conventional theoretical predictions.
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