Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs

In this study, the influence of basic design parameters and tooth surface modifications on the mechanical (friction induced) power losses of a helical gear pair is studied. A helical gear mechanical efficiency model based on elastohydrodynamic lubrication (EHL) is introduced. The model is used to si...

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Main Authors: Sheng LI, Aarthy VAIDYANATHAN, Jonny HARIANTO, Ahmet KAHRAMAN
Format: Article
Language:English
Published: The Japan Society of Mechanical Engineers 2009-06-01
Series:Journal of Advanced Mechanical Design, Systems, and Manufacturing
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/jamdsm/3/2/3_2_146/_pdf/-char/en
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author Sheng LI
Aarthy VAIDYANATHAN
Jonny HARIANTO
Ahmet KAHRAMAN
author_facet Sheng LI
Aarthy VAIDYANATHAN
Jonny HARIANTO
Ahmet KAHRAMAN
author_sort Sheng LI
collection DOAJ
description In this study, the influence of basic design parameters and tooth surface modifications on the mechanical (friction induced) power losses of a helical gear pair is studied. A helical gear mechanical efficiency model based on elastohydrodynamic lubrication (EHL) is introduced. The model is used to simulate the gear contact conditions of an example helical gear pair within the ranges of basic design parameter such as pressure and helix angles, number of teeth (module), and major diameters to quantify their impact on mechanical power losses. Variation of gear efficiency with these parameters are then weighed against other functional requirements such as transmission error amplitudes, and contact and bending stresses to demonstrate that many designs that have high efficiency might perform poorly in terms of noise, pitting, and tooth breakage. A representative design that is acceptable in all aspects is considered next with varying amounts of tooth modifications to demonstrate their impact on power losses. At the end, recommendations are made on how to reduce helical gear mechanical power losses while meeting other functional requirements as well.
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spelling doaj.art-b6b893bea4684690af7a3411ccabdfb12022-12-22T03:02:10ZengThe Japan Society of Mechanical EngineersJournal of Advanced Mechanical Design, Systems, and Manufacturing1881-30542009-06-013214615810.1299/jamdsm.3.146jamdsmInfluence of Design Parameters on Mechanical Power Losses of Helical Gear PairsSheng LI0Aarthy VAIDYANATHAN1Jonny HARIANTO2Ahmet KAHRAMAN3Gear and Power Transmission Research Laboratory The Ohio State UniversityGear and Power Transmission Research Laboratory The Ohio State UniversityGear and Power Transmission Research Laboratory The Ohio State UniversityGear and Power Transmission Research Laboratory The Ohio State UniversityIn this study, the influence of basic design parameters and tooth surface modifications on the mechanical (friction induced) power losses of a helical gear pair is studied. A helical gear mechanical efficiency model based on elastohydrodynamic lubrication (EHL) is introduced. The model is used to simulate the gear contact conditions of an example helical gear pair within the ranges of basic design parameter such as pressure and helix angles, number of teeth (module), and major diameters to quantify their impact on mechanical power losses. Variation of gear efficiency with these parameters are then weighed against other functional requirements such as transmission error amplitudes, and contact and bending stresses to demonstrate that many designs that have high efficiency might perform poorly in terms of noise, pitting, and tooth breakage. A representative design that is acceptable in all aspects is considered next with varying amounts of tooth modifications to demonstrate their impact on power losses. At the end, recommendations are made on how to reduce helical gear mechanical power losses while meeting other functional requirements as well.https://www.jstage.jst.go.jp/article/jamdsm/3/2/3_2_146/_pdf/-char/enhelical gear power lossesgear mechanical efficiencygear design
spellingShingle Sheng LI
Aarthy VAIDYANATHAN
Jonny HARIANTO
Ahmet KAHRAMAN
Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
Journal of Advanced Mechanical Design, Systems, and Manufacturing
helical gear power losses
gear mechanical efficiency
gear design
title Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
title_full Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
title_fullStr Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
title_full_unstemmed Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
title_short Influence of Design Parameters on Mechanical Power Losses of Helical Gear Pairs
title_sort influence of design parameters on mechanical power losses of helical gear pairs
topic helical gear power losses
gear mechanical efficiency
gear design
url https://www.jstage.jst.go.jp/article/jamdsm/3/2/3_2_146/_pdf/-char/en
work_keys_str_mv AT shengli influenceofdesignparametersonmechanicalpowerlossesofhelicalgearpairs
AT aarthyvaidyanathan influenceofdesignparametersonmechanicalpowerlossesofhelicalgearpairs
AT jonnyharianto influenceofdesignparametersonmechanicalpowerlossesofhelicalgearpairs
AT ahmetkahraman influenceofdesignparametersonmechanicalpowerlossesofhelicalgearpairs