円筒水槽内のスロッシングによる構造物の非線形振動 : 第1報,液面の面内運動が現れる場合の応答

概要

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This paper deals theoretically and experimentally with the nonlinear vibrations of a structure caused by water sloshing in a cylindrical tank. The structure carrying the tank is horizontally subjected to sinusoidal excitation. In a theoretical analysis, the modal equations for this coupled system are derived, and the analytical equations for the resonance curves of the harmonic oscillation are presented when the water surface is in a state of planar motion. According to the derived equations, the numerical calculations are carried out for a tuned condition such that the natural frequency of the structure is equal to the natural frequency corresponding to the fundamental sloshing mode. As a result, it is found that the resonance curves change from soft spring type to hard spring type as the water level decreases. These results agreed quantitatively well with the experimental results.
社団法人日本機械学会の論文
1995-11-25