Abstract
This paper illustrates a procedure of bearing design which avoids the iterative process of conventional methods of determining the eccentricity ratio in a journal bearing.
The iterative process results from the need to satisfy three simultaneous equations; in the method described, the equations are graphically defined on two sheets. The transparent sheet defines the bearing data and eccentricity ratio and the opaque sheet defines the viscosity-temperature characteristics of the oil chosen. The transparent sheet is moved over the opaque sheet according to a fixed locus till a point representing the bearing data is coincident with the oil inlet conditions. The eccentricity ratio can be read directly and power loss and oil flow calculations may then be carried out in the normal manner.
Experimental results obtained from tests with circumferentially grooved bearings have been used to test the generality of the design method and also to check the assumptions relating to operating viscosities in the bearing.
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