下端放水を行うシェル形長径間ゲートの流体関連振動に関する理論解析 : 第2報, 付加質量と流体減衰, 発振係数

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This paper presents added mass, fluid damping and excitation (negative damping) coefficients for flow-induced vibrations of a shell-type long span gate in which the upstream gate face consists of vertical and inclined skin plates.The equations of motion of the shell-type long-span gate include integral fluid terms which describing the fluid motion in the resorvoir. The fluid terms were calculated for a periodic gate vibration, to reduce to a superposition of the acceleration and velocity terms, thus deriving the added mass, the fluid damping and excitation coefficients in the form of a series summation. The major characteristics of these significant parameters were calculated and examined.Additionaly a fundamental mechanism of the self-excited vibration was described.
社団法人日本機械学会の論文
2000-06-25