建立了考虑时变啮合刚度和齿侧间隙的行星轮系非线性平移扭转耦合动力学模型,分析了误差及误差相位角分布在单个或多个构件上时系统的动态均载特性变化情况。结果表明,中心构件的安装和偏心误差以及行星轮的偏心误差使均载系数周期变化;行星轮的安装误差使啮合副出现持续的偏载,且其误差相位角沿切向分布时系统的不均载现象最严重;行星轮的误差对均载系数影响最大,应尽量避免误差分布在行星轮上;误差作用在相邻行星轮上时,均载性能比作用在不相邻的行星轮或单个行星轮上好;各行星轮的误差和相位角分别相等时,其对均载系数的影响可大大降低。
A nonlinear transverse - torsional coupled dynamics model for planetary gear sets is established with considering time -varying meshing stiffness and gear backlash, and the changes of dynamic load sharing characteristics are analyzed when errors and error phase angles exist on individual or multiple components. The results show that the installation, eccentricity error of central components and eccentricity error of planetary gear make load sharing coefficient change periodically, while the installation error on planetary gear will make a sus- tained partial load for meshing pairs and the uneven load phenomenon is the most serious when error phase angle is in tangential direction. The error of planetary gear has the biggest effect on load sharing coefficient, and it is suggested to avoid error distribution on planetary gear. The load sharing performance is better when errors are distributed on adjacent planets than on non adjacent planets or on one single planet. The effects on load sharing coefficient can be greatly Reduced when errors with the same amplitude and phase angle exist on all the planetary gears.