Effects of raceway waviness on dynamic behaviors of deep groove ball bearing

Deep groove ball bearings (DGBB) are widely applied in the supporting structure of a variety of rotating machineries. A high rotating accuracy should be maintained for a more stable rotor system, which requires a carefully designed DGBB. For a designing purpose, dynamic behaviors of the DGBB under different structural parameters need to be investigated. Its dynamic responses are essentially excited by the contact forces induced by external loads. Besides the relative displacement between the inner- and the outer-raceway, and the clearance, ring waviness is the major factor that affects the values of the contact forces and the deformations of different rolling elements. Therefore, the control of ring waviness order and its corresponding amplitude is of great significance for the design of a high-precision DGBB and moreover a rotor system with high rotating accuracy. In this work, the effects of different waviness order and waviness amplitude are investigated to study the dynamic behavior of a DGBB under different waviness parameter.