the dynamics coupled model of the star gearbox was established by analyzing the case substructure and extracting the coherency nodes.The drive system and the case are coupled by the coherency nodes.On the basis of analyzing the dynamic meshing stiffness and the driving error
the dynamic meshing force of the gear drive system is analyzed and calculated.By converting the dynamic meshing force
the dynamic force on the bearing was obtained.Then the dynamic response of the gearbox is calculated and analyzed.