Due to the complexity of the three-dimensional model of the sealed rotor system considering the gear meshing characteristics, which includes planetary carrier, gear, shaft, bearing, retaining ring, gasket and other parts, if not simplified, the model including all parts is directly imported into Adams Simulation analysis in the software will not only increase the time of simulation analysis, but also lead to some unnecessary factors which will affect the simulation results. Therefore, in order to improve the efficiency and save the time, the three-dimensional model of the rotor system is simplified as follows according to the structure and working characteristics of the rotor system under the action of gear meshing
(1) In the system, because the gasket, retaining ring, bolt, pin and other parts only play the role of axial positioning and fastening to the gear or bearing, and have little influence on the system motion and dynamic simulation, so they are omitted in the three-dimensional model.
(2) In the simulation analysis of system dynamics, bearing is usually represented in the form of support stiffness. In this paper, the bearing stiffness is assumed in the form of bearing stiffness.
(3) Compared with the mass of the shaft, the geometric features such as keyway and chamfering have little effect on the mass loss of the shaft, and have less influence on the motion and dynamic characteristics of the system. Therefore, the geometric features such as keyway and chamfering which affect the simulation speed are ignored in the model.
Based on the above simplification method, the 3D model of the sealed rotor system with gear meshing characteristics established by SolidWorks is simplified, and saved in Parasolid format recognized by Adams, and then imported into Adams / view module.