Characteristic Analysis of 3D Liquid Sloshing in Rectangular Container

In order to study the influence of liquid sloshing on the dynamic response of storage system,a finite element model is set up to solve the liquid sloshing in arbitrary container based on the functional extreme principle.By neglecting of the tensile force of liquid surface,the natural frequency,modes and seismic response are analyzed for a 3D liquid container and the numerical results are compared with the analytical solution.The results show that the proposed method can be used to solve the liquid sloshing problem in 3D arbitrary shape container with high precision;it suggests that the coupling of liquid sloshing and structural elastic body vibration should be considered in industry design.