Dynamic analysis of spiral bevel geared rotor systems applying finite elements and enhanced lumped parameters

X. Hua, T. C. Lim, T. Peng, W. E. Wali

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The dynamics of spiral bevel gears like most high-speed precision gears employed in motor vehicles and off highway equipments are substantially affected by the structural characteristics of the shafts and bearings. The lumped parameter model is one of the common tools applied to perform gear dynamic analysis. Even though the lumped parameter approach is computationally fast and conveniently efficient, it typically uses limited number of coordinates and may not fully account for the shaft-bearing structural characteristics accurately. In this analysis, the finite element formulation, that can generally represent more complete characteristics of the shaft-bearing assembly, is employed to enhance the current lumped parameter synthesis theory using the concept of effective mass and inertia elements. Computational output shows that the enhanced lumped parameter synthesis model is capable of predicting sufficiently accurate dynamic response when compared to the direct dynamic finite element calculations, and much more precise response than previous lumped parameter results, especially when the gear dynamics are associated with the pinion or gear bending modes. Even though this analysis focuses primarily on the spiral bevel geared rotor systems, the proposed methodology and analysis results can be easily extended to other types of gears.

Original languageEnglish (US)
Pages (from-to)97-107
Number of pages11
JournalInternational Journal of Automotive Technology
Issue number1
StatePublished - Jan 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Automotive Engineering


  • Dynamic finite elements
  • Enhanced lumped parameters
  • Gear dynamics
  • Spiral bevel gears


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