Abstract
Theoretical analyses have been carried out on the nonlinear hydroelastic vibration of a cylindrical tank with an elastic bottom. In this report, a linear axisymmetric free vibration analysis of the bottom plate coupled with the liquid contained is presented. In the analysis, the effect of the static deflection of the bottom plate due to the static liquid pressure was taking into account. Numerical calculations were carried out for kind kinds of bottom plates with different thickness and made of different kinds of materials. The effect of the liquid contained on the bulging-type natural frequency, as well as the influence of the bottom plate motion on the sloshing-type natural frequency, was investigated.
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