Elastohydrodynamic analysis and Pareto optimization of intact, worn and misaligned journal bearings

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dc.contributor.author Nikolakopoulos, PG en
dc.contributor.author Papadopoulos, CI en
dc.contributor.author Kaiktsis, L en
dc.date.accessioned 2014-03-01T02:47:20Z
dc.date.available 2014-03-01T02:47:20Z
dc.date.issued 2011 en
dc.identifier.issn 0025-6455 en
dc.identifier.uri http://hdl.handle.net/123456789/33090
dc.subject EHD lubrication en
dc.subject Journal bearings en
dc.subject Misalignment en
dc.subject Pareto optimization en
dc.subject Wear en
dc.subject.classification Mechanics en
dc.subject.other Bearing deformation en
dc.subject.other Coupled problems en
dc.subject.other Design variables en
dc.subject.other Elastohydrodynamic analysis en
dc.subject.other Fault conditions en
dc.subject.other Finite element formulations en
dc.subject.other Friction coefficients en
dc.subject.other Hydrodynamic lubrication en
dc.subject.other Independent variables en
dc.subject.other Iterative algorithm en
dc.subject.other Length to diameter ratio en
dc.subject.other Maximum pressure en
dc.subject.other Misalignment en
dc.subject.other Multi-objective optimization problem en
dc.subject.other Optimal solutions en
dc.subject.other Parameter spaces en
dc.subject.other Pareto dominance en
dc.subject.other Pareto optimization en
dc.subject.other Sommerfeld number en
dc.subject.other Algorithms en
dc.subject.other Bearing pads en
dc.subject.other Deformation en
dc.subject.other Elastohydrodynamic lubrication en
dc.subject.other Elastohydrodynamics en
dc.subject.other Friction en
dc.subject.other Journal bearings en
dc.subject.other Pareto principle en
dc.subject.other Multiobjective optimization en
dc.title Elastohydrodynamic analysis and Pareto optimization of intact, worn and misaligned journal bearings en
heal.type conferenceItem en
heal.identifier.primary 10.1007/s11012-010-9319-7 en
heal.identifier.secondary http://dx.doi.org/10.1007/s11012-010-9319-7 en
heal.language English en
heal.publicationDate 2011 en
heal.abstract In this paper, we propose an engineering approach for the elastohydrodynamic (EHD) analysis and optimization of the steady operation of intact, worn or/and misaligned journal bearings. We develop an iterative algorithm, based on finite element formulations for both the hydrodynamic lubrication and the elastic deformation of the bearing pad, which converges to the solution of the coupled problem. In addition, we formulate a multi-objective optimization problem, and seek combinations of the design variables, namely, length-to-diameter ratio, Sommerfeld number and bearing deformation coefficient, which minimize simultaneously the normalized friction coefficient and the normalized maximum pressure, under intact and representative fault conditions. Optimal solutions are identified based on the Pareto dominance, and are physically interpreted. The present development provides a tool for optimally reducing the parameter space of independent variables in EHD journal bearing design. © 2010 Springer Science+Business Media B.V. en
heal.publisher SPRINGER en
heal.journalName Meccanica en
dc.identifier.doi 10.1007/s11012-010-9319-7 en
dc.identifier.isi ISI:000290727000010 en
dc.identifier.volume 46 en
dc.identifier.issue 3 en
dc.identifier.spage 577 en
dc.identifier.epage 588 en

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