滚动轴承与轴过盈配合对轴承元件接触应力及变形量影响研究

基于滚动轴承在装配过程中轴承内圈与轴形成过盈配合的实际情况,对其进行力学理论分析。在此基础上利用建模软件对滚动轴承建立三维模型,在有限元环境下,进行材料设置、网格划分、边界条件设定、施加载荷等操作建立有限元仿真模型。分别对不同过盈量下轴承元件接触应力和变形量情况进行仿真。结果发现:轴承元件上的接触应力和变形量与过盈量成正比关系;轴承内圈与滚动体接触应力和变形量之差,随着过盈量的增加,逐渐高于滚动体与轴承外圈接触应力和变形量之差;同一过盈量下,轴承内圈、滚动体、轴承外圈的接触应力和变形量依次降低。此研究结论为轴承寿命计算、轴承制造提供了理论依据。

Research on the Influence of Interference Fit between Rolling Bearing and Shaft on Contact Stress and Deformation of Bearing Elements

Based on the actual situation of the interference fit between the bearing inner ring and the shaft in the assembly process,the mechanical theory of the rolling bearing is analyzed in this paper.A three-dimensional model of rolling bearing is established by using the modeling software,and the finite element simulation model is established by setting up the material,dividing the Mesh,setting the boundary condition and applying the load.The contact stress and deformation of bearing element under different interference are simulated.The results show that the contact stress and deformation of the bearing elements are proportional to the interference amount,and the difference between the contact stress and deformation of the bearing inner ring and the rolling element is proportional to the interference amount,under the same interference,the contact stress and deformation of the inner ring,the Rolling Body and the outer ring of the bearing decrease in turn.The research results provide a theoretical basis for bearing life calculation and bearing manufacturing.