A computational system model for gearbox loss-of-lubrication

Sean Michael McIntyre, Qingtao Yu, Robert Francis Kunz, Liming Chang, Robert Bill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


A multi-physics, multi-scale numerical simulation technique is presented for modeling gearboxes operating under loss-of-lubrication conditions. Accordingly, the tool includes components for contact mechanics, tribology associated with EHL through boundary lubrication regimes, CFD modeling of the gearbox flow, conduction within the gears, housing and other gearbox components, and free convection to the external environment. These component physics models are coupled in a fashion that accommodates their disparate space and time-scales. This paper describes each sub-model in detail, and the space-time coupling strategies used. Results are presented for a spur-gear test stand operated at NASA Glenn Research Center. The physics of the eventual runaway temperature excursions subsequent to loss-of-lubrication are captured. Model shortcomings and attendant future work are identified. Copyright

Original languageEnglish (US)
Title of host publication70th American Helicopter Society International Annual Forum 2014
PublisherAmerican Helicopter Society
Number of pages11
ISBN (Print)9781632666918
StatePublished - Jan 1 2014
Event70th American Helicopter Society International Annual Forum 2014 - Montreal, QC, Canada
Duration: May 20 2014May 22 2014

Publication series

NameAnnual Forum Proceedings - AHS International
ISSN (Print)1552-2938


Other70th American Helicopter Society International Annual Forum 2014
CityMontreal, QC

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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