Coupled acoustic-structure interaction in cylindrical liquid storage tank subjected to bi-directional excitation

Abstract

Seismic response of ground-supported cylindrical liquid storage tank subjected to uni-directional harmonic base excitation and bi-directional components of earthquake is investigated using coupled acoustic-structure interaction approach. Finite element (FE) modeling of the liquid storage tank is carried out to evaluate sloshing displacement and base shear responses. Further, the seismic responsesevaluated using the coupled acoustic-structure interaction approach are compared with that obtained using lumped mass (LM) model. The responses computed using the coupled acoustic-structure interaction analysis and the lumped mass model for estimating sloshing displacement and base shear are in good agreement.