Analysis of two-dimensional nonlinear sloshing in a rectangular tank by using a concentrated mass model

Major problems can occur when liquid sloshes in a tank, such as storage tanks during an earthquake, and this is important engineering problem to address. To analyze phenomenon, the finite-element method generally used but involves many degrees of freedom tank large. In paper, nonlinear numerical model with relatively few established for vertical horizontal two-dimensional sloshing rectangular excited horizontally. addition, proposed reducing number model. The natural frequencies, modes, frequency responses are then compared among concentrated mass model, theoretical calculations, experimental results. Good agreement was achieved them, thus demonstrating validity