3832 大形テンタゲートの複合発散振動に関する大形3次元モデル実験(J15-4 流体関連の騒音と振動(4)-機器・設備-,J15 流体関連の騒音と振動,2005年度年次大会)

概要

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Theoretical and experimental studies have been carried out to reveal the characteristics of flow-induced coupled-mode self-exited vibration of Tainter-gates, where the theoretical results were verified for its validity with a 2D model of Tainter gates. In order to justify a coarse treatment in 2D modeling, vibration tests with a 3D Tainter-gate model are surely needed. First in this study, a 1/13-scaled 3D model of Folsom dam Tainter-gate was made, where the streamwise natural bending vibration mode of the skinplate, measured in filed vibration tests for Folsom gate, was correctly realized with the aid of FEM simulations. Secondly, in-water vibration tests were conducted to surely reproduce an intensive coupled-mode self-excited vibration. Thirdly, tested results were plotted on a theoretical stability criterion diagram to confirm the theoretical analysis for its validity.
社団法人日本機械学会の論文
2005-09-18