Abstract
The ellipticity ratio is one of the major parameters that affect the performance of multilobe bearings. This article analyzes the effect of ellipticity ratio on the performance of an inverted three-lobe pressure dam bearing. The performance of an inverted three-lobe pressure dam bearing was found to be better than that of an inverted three-lobe bearing by incorporating a pressure dam in the upper lobe and two relief tracks in the lower two lobes of an ordinary inverted three-lobe bearing. Evaluation of experimental work on ellipticity ratios was done in three steps, viz. 0.4, 0.5, and 0.6, and the results showed that the stability of an inverted three-lobe pressure dam bearing was increased with an increase in the value of the ellipticity ratio.
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