長方形水槽内のスロッシングによる構造物の非線形振動

概要

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The nonlinear vibrations of a structure caused by water sloshing in a rectangular tank are theoretically and experimentally studied. In the theoretical analysis, the modal equations for sloshing are presented when the structure is horizontally subjected to a sinusoidal excitation. Then, the solutions for the harmonic oscillations of the structure and the water surface are determined, including their stability analyses. The resonance curves for this system are shown. As a result, the resonance curves are found to change from the soft type to the hard type as the water depth decreases. In the case of a comparatively large excitation, a super-summed-and-differential harmonic oscillation can occur at the tuning frequency. In conclusion, it was ascertained that these results agreed qualitatively with the experimental results.
社団法人日本機械学会の論文
1994-05-25