Involute spline couplings in aero-engine: Predicting nonlinear dynamic response with mass eccentricity
Involute spline couplings in aero-engine: Predicting nonlinear dynamic response with mass eccentricity
复制标题
DOI：
10.1177/1464419320986290
复制
发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Xiangzhen Xue;Qixin Huo;K. Dearn;Jian Liu;J. Jia
中科院分区：
文献类型：
--
作者：
Xiangzhen Xue;Qixin Huo;K. Dearn;Jian Liu;J. Jia
针对航空动力传动系统中渐开线花键失效的严重问题，提出了一种考虑多齿啮合特性和质量偏心的非线性动力学模型。计算了动态啮合力。在此基础上，研究了不同质量偏心对航空发动机花键联轴器非线性动力响应的影响。结果表明，当质量偏心较小时，其对系统的影响不大。当偏心率达到一定值时，准周期态和混沌态交替出现。同时，可以得出结论，在多周期阶段的加速度频谱是一个近似的工作频率与多齿啮合的精度的影响。通过对渐开线花键联轴器的振动实验验证了这一点。该模型考虑了多齿啮合特性和质量偏心，为类似结构的动力分析提供了参考模型。所得的非线性动力响应结果为渐开线花键联轴器的微动损伤分析和精确设计奠定了良好的理论基础。
This work presents a nonlinear dynamic model considering the multi-tooth meshing behaviour and mass eccentricity of an involute spline coupling to tackle the serious problem of involute spline failure, in aviation power transmission systems. The dynamic meshing force is calculated for the same. Based on this, the influence of different mass eccentricities on the nonlinear dynamic response of the spline coupling was investigated in aero-engines. The results show that when the mass eccentricity is small, its impact on the system is insignificant. When the eccentricity reaches a certain value, the quasi-periodic and chaotic state appears alternately. Meanwhile, it can be concluded that the acceleration-frequency spectrum during the multi-periodic phase is an approximation of the working frequency with the accuracy affected by multiple teeth engagements. This was validated by the vibration experiments of the involute spline coupling. The proposed model, which considers the multi-tooth meshing behaviour and the mass eccentricity provides a reference model for the dynamic analysis of similar structures. The nonlinear dynamic response results attained lay a good theoretical foundation for fretting damage analysis and precise designs for involute spline couplings.