Mode Characteristics of Spur Gears and Ball-Bearing Stiffness

볼 베어링의 강성과 스퍼기어 계의 모드 특성

  • Received : 2016.01.15
  • Accepted : 2016.03.21
  • Published : 2016.05.01


This study focuses on a detailed ball-bearing model for spur gears. The nonlinear ball-bearing stiffness with radial clearance is derived and calculated. The bearing stiffness is used to the 3-degree-of-freedom (DOF) spur gear system model. The mode characteristics of the gear system model are analyzed and verified by performing finite-element analysis (FEA). From the results, the bearing stiffness on the radial clearance was more sensitive under low-load conditions compared to high-load conditions. The bearing stiffness significantly affected the gear dynamics in the low-frequency region, while the mesh stiffness affected the high natural frequency.


Spur Gear;Ball Bearing;Radial Clearance;Mode Shape


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Supported by : 강릉원주대학교