Experimental measurement of the effects of torque on the dynamic behavior and system parameters of planetary gears
Experimental measurement of the effects of torque on the dynamic behavior and system parameters of planetary gears
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DOI：
10.1016/j.mechmachtheory.2013.12.018
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发表时间：
2014-04
影响因子：
5.2
通讯作者：
Tristan M. Ericson;R. Parker
中科院分区：
文献类型：
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作者：
Tristan M. Ericson;R. Parker
为捕捉直齿行星齿轮部件的独立运动而设计的实验表明，平均工作扭矩对系统参数和动态响应的影响。所有固有频率都随着扭矩的增大而增加，但行星轴承挠度较大的振型的固有频率对扭矩特别敏感。目前的集中参数模型没有考虑行星轴承刚度的各向异性，但本研究表明，当径向和切向行星轴承刚度分量分开计算时，这些模型的精度会得到提高。这些支承刚度取决于两个方向上的平均支承力。有限元/接触力学模型提供了各向异性、载荷相关的行星轴承刚度和载荷相关的啮合刚度的精确计算。使用这些值的分析模型准确地预测了行星轴承中具有高应变能的固有频率随平均扭矩变化的实验测量结果。实验还表明，振型和阻尼比随着扭矩的变化而变化。
Experiments designed to capture the independent motion of spur planetary gear components show the influence of mean operating torque on system parameters and dynamic response. All natural frequencies increase with higher torque, but the natural frequencies of modes with significant planet bearing deflection are particularly sensitive to torque. Current lumped-parameter models do not consider the anisotropic nature of planet bearing stiffnesses, but this research shows that the accuracy of these models is increased when the radial and tangential planet bearing stiffness components are calculated separately. These bearing stiffnesses depend on the mean bearing forces in the two directions. A finite element/contact mechanics model provides accurate calculation of the anisotropic, load-dependent planet bearing stiffnesses and the load-dependent mesh stiffnesses. An analytical model using these values accurately predicts changes in the experimentally measured natural frequencies of modes with high strain energy in the planet bearings for varying mean torque. Experiments also show changes in the mode shapes and damping ratios with changing torque.