基于ANSYS的深沟球轴承故障诊断与分析

发布时间：2018-03-19 22:30

本文选题：深沟球轴承　切入点：故障诊断　出处：《轻工科技》2017年01期 　论文类型：期刊论文

【摘要】：滚动轴承是应用极其广泛的机械支承,一般由内圈、滚珠、保持架、外圈组成。轴承性能的优劣及寿命的长短直接影响到机器的工作能力。因此,对轴承的监测与故障诊断十分重要。在滚动轴承当中,深沟球轴承具备使用量大、生产工艺成熟、结构简单等特点。因此,本文选用深沟球轴承作为研究对象,建立深沟球轴承的三维有限元模型,再通过有限元分析软件ANSYS Workbench,建立深沟球轴承的分析模型。通过加载载荷和边界条件,对其进行静力学接触分析,得出轴承承载过程中的应力和变形趋势及接触应力的变化规律。最后用MATLAB对一组故障信号数据进行傅立叶变换,分析其故障频率并与理论计算结果进行对比,验证傅立叶变换在故障诊断中的有效性。
[Abstract]:Rolling bearing is a widely used mechanical support, which is generally composed of inner ring, ball ball, cage and outer ring. The performance of bearing and the length of service life have a direct impact on the working ability of the machine. It is very important to monitor and fault diagnose the bearing. In the rolling bearing, the deep groove ball bearing has the characteristics of large usage, mature production technology, simple structure, etc. Therefore, the deep groove ball bearing is chosen as the research object in this paper. The three-dimensional finite element model of deep groove ball bearing is established, and the analysis model of deep groove ball bearing is established by the finite element analysis software ANSYS Workbench. The static contact analysis of deep groove ball bearing is carried out by loading load and boundary condition. The trend of stress and deformation and the change of contact stress during bearing loading are obtained. Finally, a group of fault signal data is analyzed by Fourier transform with MATLAB, and the fault frequency is analyzed and compared with the theoretical calculation results. The validity of Fourier transform in fault diagnosis is verified.
【作者单位】：重庆交通大学;
【基金】：重庆市研究生科研创新基金(CYS15181)
【分类号】：TH133.33

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