谐波传动中混合材料柔性齿轮的性能分析

Numerical Analysis of Hybrid Materials Flexspline of a Harmonic Drive

提出用合金钢及环氧树脂基复合材料制成新型混合材料柔轮,采用有限元法对其性能进行了数值分析。首先在合理的假设条件下建立了混合材料柔轮的有限元模型,然后对柔轮与波发生器之间的接触区进行了非线性分析;最后通过计算比较了不同材料、不同纤维配角情况下四个关键截面处的最大应力值,并对柔轮自由振动特性进行了分析,获得了柔轮的各阶振型及振动频率。结果表明这种新型混合材料柔轮在危险截面的最大应力较传统的钢制柔轮有所降低,而自由振动频率有所提高,为生产设计高性能柔轮提供参考。

The finite element method was used to carry on the numerical analysis of a new flexsplible, which was made of alloy steel and composite materials based on epoxy resin. Firstly the finite element models of flexsplibles were set up with some reasonable assumptions. Then the nonlinear analysis was performed on the contact zone between flexspline and wave generator. Finally the maximum stresses were compared between different materials and different stacking fiber angles in four important cross-sections. And the free vibration of the flexsplines were studied in order to get the shapes and the frequencies. The calculations had shown a reduction of maximum stresses in the analysed sections for the steel-composite hybrid flexsplines in comparison to traditional steel flexsplines. But it was found that the hybrid flexsplines increased the value of vibration frequency in comparison with the steel ones. These could provide some references for designing highperformance flexspline.