基于ADAMS的行星齿轮系刚柔耦合仿真局部缺陷识别

针对行星齿轮系在工作过程中出现的局部缺陷，将引起齿轮啮合异常，并导致冲击异常，其特征频率就会发生变化。现用ADAMS与ANSYS建立行星齿轮系的刚柔耦合模型，通过快速傅里叶变换（FFT）得到其啮合力的频域曲线，并分析无缺陷行星齿轮系的特征频率、行星轮齿局部缺陷的特征频率、太阳轮齿局部缺陷的特征频率。仿真结果与理论值吻合，说明了所建虚拟样机模型可靠，得到无缺陷行星齿轮系的特征频率是265.34Hz，行星轮齿局部缺陷的特征频率是17.67Hz，太阳轮齿局部缺陷的特征频率是36.13Hz，可用于识别行星齿轮系的行星轮或太阳轮局部缺陷。对行星齿轮系振动特性、可靠性的研究具有一定的指导意义。

Identification of localized defects based on rigid-flexible coupled simulation of ADAMS for planetary gear trains

Localized defects in operating planetary gears would cause abnormal gears meshing and impact. Correspondingly, the characteristic frequency would be changed. In this paper, a rigid-flexible coupled model for planetary gear trains was built using ADAMS and ANSYS. The frequency domain curve of meshing force was calculated by FFT. At this point, the characteristic frequencies of the defect-free planetary gear trains and both the planetary gear trains and sun gears with localized defects were analyzed. The simulation result is consistent with the theoretical results which indicated that the proposed model of virtual prototype machines is reliable: Respectively, the characteristic frequencies of the defects-free planetary gear trains, the planetary gear trains and sun gears with localized defects are 265.34Hz, 17.67Hz and 36.13Hz. this conclusion could be applied in identification of localized defects in planetary gears and sun gears in gear trains. Furthermore, it provides guidance for research on reliability and vibration performance of planetary gear trains.