Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Finite Element Model based on Strain Tests for Predicting Bending Strength of Small Gears for Aircraft

  • Kim, Taehyung (Major of Aeronautical & Mechanical Engineering, Division of Aeronautics, Cheongju University) ;
  • Seok, Taehyeon (Major of Aeronautical & Mechanical Engineering, Division of Aeronautics, Cheongju University) ;
  • Seol, Jin-woon (PGM R&D Laboratory, LIG Nex1 Co. Ltd.) ;
  • Lee, Byung-ho (PGM R&D Laboratory, LIG Nex1 Co. Ltd.) ;
  • Kwon, Byung-gi (PGM R&D Laboratory, LIG Nex1 Co. Ltd.) ;
  • Choi, Jong-yoon (Aerospace Technology Research Institute, Agency for Defence Development)
  • Received : 2020.08.26
  • Accepted : 2020.10.19
  • Published : 2020.12.31
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Abstract

This study proposes a finite element (FE) model for predicting the bending strength of small gears used in electro-mechanical actuators for aircraft. First, a strain gauge was attached to the tooth root of test gear, and the strain was measured. Subsequently, the FE model was applied to calculate the strain of the test gear, and the modeled strain was compared with the experimental strain. The results confirmed that the FE strain was very close to the experimental strain and the FE model was valid. This FE model was extended to the bending strength analysis of several small gear tooth models. The bending strengths of all the tooth models were almost identical to the ISO theoretical bending strength. Finally, the FE model was validated and the reliability of the modeled bending strength was evaluated through the strain measurement experiment.

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References

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