A dynamic calculating model for angular contact ball bearings is established based on analysis of interaction among parts of bearings.Combing with calculation method for fatigue life based on contact load on micro area,taking the angular contact ball bearings for rotor system of gas -turbine engine as examples,the influence of rotation mode for rings on performance of bearings is analyzed,which provide reference for optimal design of bearings.%根据角接触球轴承零件相互作用，建立了角接触球轴承动力学计算模型。结合基于轴承微区接触的疲劳寿命计算方法，以某燃气涡轮发动机转子系统中的角接触球轴承为例，分析了套圈转动方式对轴承性能的影响。分析结果可为轴承优化设计提供参考依据。
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