| Citation: | XU Huachao, QIN Datong, XU Zhiliang, et al. Research on resonance energy transfer characteristics of helicopter main transmission system[J]. Journal of Aerospace Power, 2025, 40（9）：20230623 doi: 10.13224/j.cnki.jasp.20230623
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To make the mechanical model better match the physical model, a dynamic model of the helicopter main transmission system considering the structural flexibility was constructed by using the hybrid lumped parameter/finite element modeling method. Based on the established model, the inherent characteristics were analyzed, and the resonance energy transfer characteristics of the system were comprehensively studied using Campbell diagram and modal energy method. The results showed that the vibration modes of the helicopter main transmission system can be classified into global pure torsional vibration mode, fixed shaft-planetary gear coupling vibration mode, local planetary gear vibration mode and local fixed shaft transmission vibration mode. When the input speed was close to
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