Abstract
The sloshing response characteristics of floating roofs in aboveground storage tanks are presented in this paper. The linear analytical method developed by Matsui is used in the fluid coupled elastic vibration analysis. The floating roofs are modeled to the elastic circular plates assuming the double deck type. The seismic acceleration is the sinusoidal input in which the frequency is coincides with the natural frequency of the floating roof. The results show that the stress due to high order vibration mode is significant effect on the roof strength.
