Tribodynamics of Spiral Bevel Gears under Mixed Elastohydrodynamic Lubrication

Srikumar Conjeevaram Gopalakrishnan, Yawen Wang, Teik C. Lim

Research output: Contribution to journalConference articlepeer-review


Spiral bevel gears are commonly used in heavy-duty trucks and buses. An integrated dynamic model of the spiral bevel gears with mixed elastohydrodynamic lubrication is proposed in this study. First, loaded tooth contact analysis was performed to evaluate the kinematic parameters and calculate the mesh force variation for one mesh cycle. These kinematic quantities are used in the mixed elastohydrodynamic lubrication (EHL) calculation to determine the EHL parameters such as pressure, film thickness, and shear distribution considering the surface roughness profile of the spiral bevel gears. Then, the EHL pressure and film thickness are used in the calculation of the coefficient of friction, damping, and oil film elastohydrodynamic lubrication stiffness. Last, these tribological parameters are used in the dynamic calculation of the spiral bevel gears. The calculated tribodynamic response of the spiral bevel gears are compared for different dynamic models and the influence of lubrication on the gear dynamic responses is discussed.

Original languageEnglish (US)
JournalSAE Technical Papers
StatePublished - May 8 2023
EventSAE 2023 Noise and Vibration Conference and Exhibition, NVC 2023 - Grand Rapids, United States
Duration: May 15 2023May 18 2023

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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