| 杨之含,王少红,马 超.单级行星齿轮箱行星轮故障动力学分析[J].电子测量与仪器学报,2020,34(1):156-162 |
| 单级行星齿轮箱行星轮故障动力学分析 |
| Characteristics of single stage planetary gearbox under crack failure |
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| DOI： |
| 中文关键词: 轮齿裂纹 时变啮合刚度 平移—扭转耦合 |
| 英文关键词:gear tooth crack time varying mesh stiffness translation torsional coupling |
| 基金项目:中国科学院太空应用重点实验室开放基金（LSU KFJJ-2018-07）资助项目 |
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| 中文摘要: |
| 针对单级行星齿轮的裂纹故障问题，采用集中参数法建立了平移—扭转耦合动力学模型，分析了单个行星轮在不同裂纹程度下、不同行星轮故障数量下系统的响应特性。结果表明,当单个行星轮发生裂纹故障时，随着裂纹程度的增大，系统振动剧烈程度变大，二倍频谱能量占比逐渐增大到97%，相轨图明显由内八字逐渐变为单圆周曲线，系统运动趋于平稳；当行星轮故障数量增大时，系统振动剧烈程度变小，频谱中二倍频能量占比逐渐减小到64%，相轨图内八字明显，系统运动趋于复杂。 |
| 英文摘要: |
| Aiming at the crack problem, a translation torsion coupling dynamics model of single stage planetary gears was established by the lumped centralized method, considering time varying meshing stiffness, support stiffness, integrated meshing error and meshing damping. The response characteristics of a single planetary gear under different crack degrees were analyzed, and the response characteristics of the system under different planetary gear failures were analyzed. The results show that, when a single planetary gear has a crack failure, the double frequency is the main energy. As the degree of crack increases, the vibration of the system becomes severe, and the proportion of the energy of the double spectrum increases gradually, the phase diagram gradually changes from the inner character to the single circle curve, and the system motion tends to be stable. When the number of planetary gear failures increases, the vibration severity of the system becomes smaller than that of a single faulty planetary gear, and the spectral energy distribution changes more obviously. The proportion of the double frequency energy is getting smaller and smaller and the internal curve is gradually separated from the external curve. The research in this paper has certain theoretical significance for the crack fault diagnosis of single stage planetary gearbox. |
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