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Experimental assessment of gear meshing excitation propagation throughout multi megawatt gearboxes

  • Jan Helsen
  • Frederik Vanhollebeke
  • Ben Marrant
  • Dries Berckmans
  • Dirk Vandepitte
  • Wim Desmet
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Gearboxes consisting of both planetary and helical gear stages are increasingly used in helicopters, wind turbines and vehicles. A requirement for reliable gearbox design calculations is sufficient insight in internal gearbox dynamics. Excitation frequencies and excitation levels play an important role. Main objective of this work is to investigate the influence of internal gear meshing excitation on the overall gearbox dynamics. Experiments are conducted on a dynamic 13.2MW test facility on which two multi-megawatt wind turbine gearboxes are placed back to back. A dedicated dynamic load case representing realistic drive train excitation is applied and the role of the meshing orders in spreading this excitation over a broader frequency range is determined by means of waterfall spectra from measurement signals of bearing displacement sensors, torque sensors, encoders and accelerometers throughout the gearbox. Moreover the propagation of the meshing excitation throughout the gearbox is of interest. Relating the orders to the corresponding excitation source allows the definition of order influence regions within the gearbox. These insights will be used to prove the need for accurate gear mesh order excitation representation within the corresponding flexible multibody simulation model. Moreover the meshing order influence regions offer the opportunity to tune order excitation to the gearbox modal properties and reduce vibration levels.

Keywords

Wind Turbine Helical Gear Gear Mesh Planet Carrier Wind Turbine Gearbox 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Jan Helsen
    • 1
  • Frederik Vanhollebeke
    • 2
  • Ben Marrant
    • 2
  • Dries Berckmans
    • 1
  • Dirk Vandepitte
    • 1
  • Wim Desmet
    • 1
  1. 1.K.U.Leuven Department of Mechanical Engineering Division PMAHeverleeBelgium
  2. 2.Hansen Transmissions International nvKontichBelgium

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