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Prediction of Transmission Error Using Dynamic Analysis of a Helical Gear

헬리컬기어의 동적해석을 통한 전달오차 예측

  • Lee, Jeongseok (Dept. of Mechanical Engineering, Inje Univ.) ;
  • Yoon, Moonyoung (Dept. of Mechanical Engineering, Inje Univ.) ;
  • Boo, Kwangsuk (High Safety Vehicle Core Technology Research Center, Inje Univ.) ;
  • Kim, Heungseob (High Safety Vehicle Core Technology Research Center, Inje Univ.)
  • 이정석 (인제대학교 기계공학과) ;
  • 윤문영 (인제대학교 기계공학과) ;
  • 부광석 (인제대학교 고안전차량핵심기술연구소) ;
  • 김흥섭 (인제대학교 고안전차량핵심기술연구소)
  • Received : 2016.02.20
  • Accepted : 2016.10.04
  • Published : 2016.12.01

Abstract

The fundamental reason for gear noise is transmission error. Transmission error occurs because of STE (static transmission error) and DTE (dynamic transmission error), while a pair of gears is meshing. These errors are generated by the deflection of the teeth and the friction on the surface of the teeth. In addition, the vibration generated by transmission error leads to excited bearings. The bearings support the shafts, and the noise is radiated after exciting the gear casing. The analysis of the contact stress in helical gear tooth flanks indicates that it is due to impact loading, such as the sudden engagement and disengagement of a gear. Stress analysis is performed for different roll positions, in order to determine the most critical roll angle. Dynamic analysis is performed on this critical roll position, in order to evaluate variation in stresses and tooth contact force, with respect to time. In this study, transmission error analysis was implemented on a spur and helical gear with involute geometry and a modified geometry profile. In addition, in order to evaluate the intensity of impact due to sudden engagement and significant backlash, the impact factor was calculated using the finite element analysis results of static and dynamic maximum bending stresses.

Keywords

Helical Gear;Roll Angle;Impact Loading;Transmission Error;Impact Factor

Acknowledgement

Supported by : 한국연구재단

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