The finite element analysis software Solidworks Simulation was used to analyze the problem of bearing inner race inter-ference contact.From the stress nephogram,strain nephogram and displacement nephogram,finding the position ofmaximum stress ,circumferential stress,radial stress and radial displacement.The interference fit analysis can provide the theoretical basis for the design and check calculation of the interference fit of the main shaft of the traction motor,and provide the basis for judging the bearing pressure.%利用有限元Solidworks Simulation软件对球轴承内圈过盈接触问题进行仿真分析，通过求解出应力、应变和位移云图，找出了轴的最大应力、周向应力、径向应力和径向位移。过盈配合接触应力分析可为牵引电机主轴轴承过盈配合的设计和校核计算提供理论依据，同时为判断轴承压装到位提供依据。
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