Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Hot Forging Analysis of Rotor Grip with Titanium Alloy for Unmanned Helicopter

무인헬기용 티타늄 합금 로터 그립의 열간성형해석

  • 이성철 (동의대학교 대학원 기계공학과) ;
  • 공재현 (동의대학교 대학원 기계공학과) ;
  • 허관도 (동의대학교 기계공학과)
  • Received : 2011.03.09
  • Accepted : 2011.04.11
  • Published : 2011.04.30
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Abstract

Rotor grip is used as a component of rotor system in unmanned helicopter. Instead of usual machining, hot forging process has been considered to improve its proof stress against repeated loading conditions and crash in the farm-field. Die design and forming analysis have been performed according to the conditions such as billet volume, flash, cavity filling, and the distribution of damage during the forming by using FE analysis. In the results of analysis, the possibility of structural failure in the model has not been found because its maximum effective stress is much lower than yield strength of the titanium alloy. In the forging die design, flash has been allowed because of low production in the industrial field. Preform design was studied by using FE-analysis, and its optimal dimension was obtained in the hot forging of rotor grip with titanium alloy.

Keywords

References

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