円筒殻の超音速パネルフラッターの非線形解析

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タイトル別名
  • Nonlinear Analysis of Supersonic Panel Flutter of Circular Cylindrical Shells
  • エントウカク ノ チョウオンソク パネルフラッター ノ ヒセンケイ カイセキ

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説明

The nonlinear theoretical analysis of supersonic panel flutter of circular cylindrical shells is performed in order to compare with the authors' experimental results, which could not be explained by the linear analysis. The nonlinear governing equation is solved approximately with the aid of the methods of averaging and numerical integration. The method of averaging is used in order to obtain the solutions of the steady-state vibration and examine its stability for small disturbances. The results of the numerical integratio n indicate that the calculated values of amplitudes, frequency and phase difference for the circumferential wave number which was observed in the experiment agree well with those obtained from the experiment. They also indicate that the flutter occurs for finite disturbances in a certain region below the minimum value of the critical dynamic pressure predicted by the linear theory. The nonlinear theoretical analysis provides a good explanation for the experimental results both qualitatively and quantitatively.

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