Abstract：Based on the method of gear system dynamics and Lagrange equation, a coupling dynamic model of the Co-axial Counter-rotating Epicyclic Transmissions(CCET) is built by lumped-parameter method, and the support stiffness, elastic coupling and power flow of the gear train is considered in the model. Under the action of the gear pair run-out error, meshing-frequency error and time-varying mesh stiffness together, time-domain dynamic characteristics about displacement response and speed response are achieved by numerical analysis method, and the load sharing is compared between ordinary gear train and differential gear train, which provides the basis for dynamic performance optimization and noise and vibration study of CCET.
2014, Vol. 33 
