A model of the pumping action between the teeth of high-speed spur and helical gears
Résumé
With the evolution of the high-speed gearbox market for high-power turbo units, mesh velocity is increasing year after year. For a high-speed gearbox, an important part of power losses is due to the mesh. A global estimation is not possible and an analytical approach is necessary with evaluations of three different origins of power losses: friction in mesh contact, gear windage and pumping effect between teeth. This article thoroughly explains the last subject. The theoretical model, which is developed, is a useful tool for analyzing the physical effect of pumping in mesh. It can be used to optimize the choice of the gear parameters that influence heat generation and predict temperature distribution along the teeth for the design of thermal lead corrections.
Domaines
Mécanique [physics.med-ph]Origine | Fichiers produits par l'(les) auteur(s) |
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