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Título del libro: Proceedings Of The Asme Turbo Expo: Turbine Technical Conference And Exposition, 2016, Vol 7b Título del capítulo: DESIGN OF HYBRID HYDROSTATIC/HYDRODYNAMIC JOURNAL BEARINGS FOR OPTIMUM SELF-COMPENSATION UNDER MISALIGNING EXTERNAL LOADS
A method to design hybrid hydrostatic/hydrodynamic journal bearings,
with the criterion of optimized self-compensation under misaligning
loads, is presented. An analysis considering laminar and turbulent flow
of a Newtonian incompressible lubricant between the bearing and a
misaligned shaft, with restricted lubricant supply to each recess, is
discussed. The mathematical model considers the modified steady state
Reynolds lubrication equation, an exact function for the local bearing
radial clearance with a misaligned shaft, the continuity
integral-differential equations at the recess limits and boundary
conditions at the cavitation zone and outer limits. The
finite-difference method was used, and a modular computer program was
developed The procedure follows a univariate search to determine the
optimum size and position of recesses and therefore obtain the design
with the maximum reactive moment under misaligning loads. A validation
of the model was obtained comparing the results with experimental and
calculated data from literature. Results for a 4+4 LBP hybrid bearing
design are presented