Abstract
Sterntube bearings are commonly subjected to significant static and dynamic angular misalignment by the adjacent propeller. Results of a theoretical investigation into the performance of oil-lubricated sterntube bearings with static misalignment are reported. In addition, 32 oil film force and moment coefficients, which fully define the response to both lateral and angular motion of the journal axis, are presented. Limitations to the application of these coefficients arising from their nonlinearity are discussed. A practical sterntube bearing analysis program is described which utilizes computed dimensionless performance data. This program determines the effective oil film viscosity via an iterative heat balance procedure, and thus simulates the operating conditions of a real bearing. Results produced by this program are included, and give a realistic indication of the effect of L/D ratio variation for a range of misalignment angles. Presented as an American Society of Lubrication Engineers paper at the A...
Published Version
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