【摘要】 齿轮副啮合刚度的周期性变化是行星齿轮传动系统产生振动的主要内部激励,深入研究齿轮的啮合刚度对解明齿轮系统的振动特征具有重要意义。采用能量法、有限元法和矩形波法分别建立了行星齿轮啮合刚度激励模型,并采用这3种模型分别求解了太阳轮、行星轮以及行星轮齿圈综合啮合刚度,对比了这3种模型求解啮合刚度的优劣。结果表明,3种刚度激励下的复合行星排各个构件的振动加速度幅值相差很小,且有限元法计算得到的振动加速度幅值稍大于解析法计算得到的振动加速度幅值,矩形波法计算得到的加速度幅值最小。更多还原

【Abstract】 The periodical variation of meshing stiffness of the gear pair is the main internal excitation of the vibration generated by the planetary gear transmission system. It is of great significance to deeply study the meshing stiffness of the gear system for the vibration characteristics of the gear system. The energetic method,the finite element method and the rectangular wave method are used to establish the meshing stiffness model of planetary gears respectively. These three models are used to solve the integrated meshing stiffness of the solar wheel,planetary gear and internal ring gear respectively. Then,the advantages and disadvantages of these three models for calculating mesh stiffness are compared. The results show that the vibration acceleration amplitudes of compound planet gear members under these three kinds of stiffness excitations have a small difference. The amplitude of vibration acceleration calculated by the finite element method is slightly larger than that calculated by the analytical method,and the amplitude of the acceleration calculated by the rectangular wave method is the smallest.更多还原