TY - GEN
T1 - A computational system model for gearbox loss-of-lubrication
AU - McIntyre, Sean Michael
AU - Yu, Qingtao
AU - Kunz, Robert Francis
AU - Chang, Liming
AU - Bill, Robert
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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
AB - 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
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M3 - Conference contribution
AN - SCOPUS:84906681596
SN - 9781632666918
T3 - Annual Forum Proceedings - AHS International
SP - 137
EP - 147
BT - 70th American Helicopter Society International Annual Forum 2014
PB - American Helicopter Society
T2 - 70th American Helicopter Society International Annual Forum 2014
Y2 - 20 May 2014 through 22 May 2014
ER -