Influence of Inter-Stage Coupling Stiffness on Sensitivity of Two-Stage Planetary Transmission System [级间耦合刚度对行星传动系统灵敏度的影响分析]

作者：Li J.-Y.; Zhu T.-J.; Zong C.-F.; Cai C.-M.; Hu Q.-C.

来源：Journal of North University of China(Natural Science Edition), 2018, 39(5): 495-502.

DOI：10.3969/j.issn.1673-3193.2018.05.003

• Inter-stage coupling stiffness
• Modal energy
• Sensitivity
• Thin-walled ring gear

The lumped parameter-rigid elastic coupled dynamic model of two-stage planetary transmission system with thin-walled ring gear on elastic supports was established through inter-stage coupled method, in which the elastic deformation of the ring gear and the tangential and radial stiffness constraints were considered. Based on it, the finite difference method and modal energy were used for studying the sensitivity of the natural frequencies of the planetary transmission system with four planet gears. The results show that the natural frequencies ofⅠ/Ⅱcoupling torsional vibration modes vary with the coupling torsional stiffness of the ring gear of planet set I with the carrier of planet set II, the coupling torsional stiffness of the sun gear of planet set I with the sun gear of planet set II. The sensitivity of the natural frequency decreases with the increase of the inter-stage coupling stiffness. The natural frequencies of other vibration modes remain unchanged. The above conclusions are further verified by modal energy analysis.

• 单位
  华南理工大学