An Unbalance Optimization Method for a Multi-Stage Rotor Based on an Assembly Error Propagation Model

For the assembly of a multi-stage rotor, such as an aero-engine or gas turbine, parts need to be assembled optimally avoid excessive unbalance. We propose method optimize unbalance rotor during assembly. First, we developed error propagation model for rotor. The alignment process and distribution screw holes adjacent rotors was considered first time. Secondly, new datum optimization ensure consistency with actual conditions dynamic balance test. Finally, achieved using genetic algorithm, corresponding optimal orientations at different stages were also identified. results simulations showed that had high accuracy good convergence. effect proven experiments.