Sloshing analysis of fluid in storage tank under lateral seismic excitations

In this paper,sloshing response of liquid in storage tank under horizontal seismic excitation was analysed with finite element method considering interaction between storage tank and flexible soil foundation. The result shows that the liquid sloshing appears as long period and combination of multi-modes.Comparing with small tank,the sloshing in large tank includes not only fundamental mode but also higher modes and its fundamental period is much larger than that of small tank.