滚动轴承的材料显微实验和接触强度分析

The Material Microscopic Experiment and Contact Intensity Analysis to the Rolling Bearing

制取了滚动轴承各零件的试样,利用扫描电子显微镜进行了显微组织观察和能谱分析,得到了滚动轴承的材料组成元素及成分值,确定了材料的性能参数。利用ANSYS软件建立了滚动轴承的三维有限元模型和接触对,完成了其接触强度分析,得到了滚动轴承的接触应力、接触渗透量以及变形的分布规律。结果表明整个轴承的应力和变形都在允许范围内,且最大接触应力和渗透量都分布在轴承两端,轴承最容易损坏的是内圈。最后,在接触分析的基础上,对轴承进行了疲劳计算,得到滚动轴承的疲劳系数为0.88,表明该轴承能够满足疲劳强度的要求。

The samples of each part of the rolling bearing have been prepared,and the microstructure observation and energy spectrum analysis are carried out by scanning electron microscope.The material composition and composition values of the rolling bearing are obtained,and the performance parameters of the material are determined.The three-dimensional finite element model and contact pair of rolling bearing are established by ANSYS software.The contact strength analysis is completed,and the contact stress,contact penetration and deformation distribution of rolling bearing are obtained.The results show that the stress and deformation of the whole bearing are within the allowable range,and the maximum contact stress and penetration are distributed at both ends of the bearing.The inner ring in the bearing is the most likely to damage.Finally,based on the contact analysis,the fatigue calculation to the bearing is carried out,and the fatigue coefficient of the rolling bearing is 0.88,which indicates that the bearing can meet the fatigue strength requirement.