流体励振力によるガスタービン圧縮機ベーンの振動

概要

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This paper deals with the prediction and the measurement of the resonant stress of compressor vanes of the gas turbine due to fluid exciting forces such as the rotating stall, the viscous wake and the potential flow interaction. First, the dynamic characteristics of the vanes such as the natural frequency and the logarithmic decrement are described. Second, the measurement method and the measurement results of the vibration stress of the vanes are presented. Finally, two of these results (the resonance stress due to the viscous wake of the preceding blade row and the potential flow interaction) are compared with the theoretical ones based on the classical aerodynamic theory. It is clarified that the theory is useful for the prediction of the resonant stress of the vanes subjected to fluid exciting forces.
一般社団法人日本機械学会の論文
1999-01-25