弾性底板を有する円筒貯槽の流力弾性非線形振動 : 第1報, 実験

抄録

Experimental studies have been carried out on the nonlinear hydroelastic vibration of a cylindrical tank with an elastic bottom. Water having a free surface, was used to partially fill a rigid cylindrical tank. The coupled nonlinear vibration characteristics of the water contained and the bottom plate were investigated. The influence of a flexible bottom on the linear natural frequency of a sloshing-type response, in which liquid motion is predominant, as well as the influence of the water contained on that of a bulging-type response, in which the bottom plate motion is predominant, were also clarified by varying the height of the contained water. Polyester film 0.25 mm and 0.35 mm thick was used as the bottom plate.