为了研究滚动球轴承内圈/外圈发生裂纹故障时的故障机理及振动特性，需对滚动轴承裂纹故障进行仿真研究。通过研究建立了轴承内圈裂纹故障激励的非线性模型，在模型中充分考虑了滚道表面波纹对接触刚度和位移的影响、裂纹缺陷对故障激励力的影响。在此基础上建立轴-滚动轴承-轴承座系统振动模型，并进行了动力学仿真分析。经与台架试验结果进行对比分析，仿真结果可以较好地反映轴承故障的机理，验证了滚动球故障动力学建模的合理性和正确性。
In order to study the failure mechanism and vibration characteristics of the single-crack fault in the inner/outer ring of the rolling ball bearing, the cracking failure of the rolling bearing needs to be simulated. The nonlinear model of the crack excitation of the outer ring/inner ring of the bearing is established. The influence of the surface roughness of the raceway on the contact stiffness and displacement and the influence of the crack defect on the fault excitation force are fully considered in the model. On this basis, the vibration model of the shaft-rolling bearing-bearing system was established and the dynamic simulation analysis was carried out. Comparing with the test results of the bench, the simulation results can better reflect the mechanism of bearing failure, and verify the rationality and correctness of the rolling ball fault dynamics modeling.
2019,41(9): 100-104 收稿日期：2019-07-08
DOI：10.3404/j.issn.1672-7649.2019.09.019
分类号：U664.21
基金项目：国防科技工业局MPRD计划资助项目
作者简介：刘胜兰(1989-),女,工程师,主要从事动力传动系统故障仿真,信号处理研究等
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