Effect of Offset of Bearing on Radiation Sound and Vibration in the Gear System

기어장치에서 베어링의 설치위치가 소음특성에 미치는 영향

  • 류성기 (경상대학교 기계설계학과, 항공기부품기술연구센터) ;
  • 이중희 (전북대학교 고본자공학과)
  • Published : 1998.03.01


This paper describes a evaluation method of sound power radiated from the vibrating faces of a single stage gear box using sound radiation. The vibration caused from meshing gears is transmitted to the gear box faces through shafts and bearings. A Boundary Element Method (BEM) is developed to calculate the sound power radiated from the faces with their velocity response which is based on the Building Block Approach (BBA). Radiation efficiency as well as the sound intensity on the surface of the gear box is also calculated. Sound power of the gear box is larger in the case that bearings have offset to the wall of the gear box than that bearings are on the center of the gear box. The sound power increases with the augmentation of the offset.