2022
DOI: 10.1115/1.4054050
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Nonlinear Multimodal Model for Tuned Sloshing Dampers With Nonflat Bottoms

Abstract: A third-order nonlinear multimodal model is developed for tanks with non-flat bottoms. A 6-node finite element model is used to determine the mode shapes of the velocity potential and the associated natural sloshing frequencies. Using this modal information, equations of motion are developed that accommodate the nonlinear coupling among the first three sloshing modes. Damping arising from screens is incorporated into the model using the principle of virtual work. The equations of motion are ordinary differenti… Show more

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