| Citation: | ZHANG Xiaojie, MAO Jianxing, HU Dianyin, et al. Effect of variable camber guide vane on forced vibration of fan rotor blade[J]. Journal of Aerospace Power, 2025, 40（9）：20230312 doi: 10.13224/j.cnki.jasp.20230312
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In view of the aeroelastic problem caused by the wake excitation of variable camber guide vanes, forced vibration analysis of a 1.5 stage fan rotor was conducted with the utilization of the time transformation method and the harmonic response method. The effect of variable camber guide vane angle on the aerodynamic performance and vibration characteristics of the downstream rotor blade was studied. Results indicated that as the guide vane opened, the mass flow rate, pressure ratio, and efficiency all increased. Adjusting the guide vane had a greater impact on the root area of the rotor blade. For aerodynamic excitation, as the guide vane closed, the aerodynamic amplitude of the rotor blade increased and the phase changed sharply. The angle of the guide vane had little effect on the aerodynamic damping of the higher-order modes of concern. With the closing of guide vanes, the aerodynamic damping decreased slightly. Overall, the greater deviation of the guide vane angle from the design angle indicated the higher vibration response of the downstream rotor blade. It was considered that there was an optimal angle to minimize the vibration stress of the rotor blade.
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