Vibration Analysis of Double Deck Floating Roof of Storage Tank in Cases of Tube, Ordinary and Thickened Foam Seals

Vibration of a floating roof in cases tube and foam seals has been analyzed by ANSYS. Fluid-Structure Interaction (FSI) sloshing phenomenon have considered. Modal responses, time waves frequency spectrums the vibrations two sealing were evaluated during horizontal seismic excitation tank base. Then, effects main mechanical factors seal on vibration investigated. The amplitude case was considerably lower than that due to more damping seal. Also, had higher natural tank-axial (vertical) shear modulus relative Regarding this result, vertically added 50% base seismically excited again. It seen improvement thickness contribution mitigation.