タンク内流動液のスロッシング振動特性に関する研究 : 第2報,周波数応答特性と制振効果

概要

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A small rectangular test tank, installed with two vertical pipes at both sides and filled with water flowing due to water suction and ejection through holes in the pipes, was sinusoidally excited to generate sloshing oscillation in the flowing water. The frequency response characteristics of the sloshing amplitude were experimentally obtained for five flow patterns of water in the tank, and the natural frequencies and modal dampings of the 1st, 2nd, and 3rd modes were estimated using a conventional modal analysis technique. The results showed that sloshing natural frequencies decreased due to the centrifugal force generated by water surface flow velocity, acting on the sloshing liquid, and the dampings increased due to kinetic energy dissipation caused by a steady flow at the water surface. Thus the sloshing oscillation was markedly suppressed at a critical flow velocity on the water surface.
一般社団法人日本機械学会の論文
1988-08-25