ABSTRACT
The effect of the earthquake motion on the liquid storage tank involves various complex material interactions which makes it a cumbersome problem for the analysis. Generally, all the analysis assumes that the earthquake is always orthogonal to the structural boundary, but in reality, the angle of the incidence can vary. The determination of the critical magnitude of the stresses and moments for a liquid storage tank (LST) is done in the present study by varying the angle of incidence. The nonlinear time history analysis is carried out using ABAQUS which employs Arbitrary Lagrangian-Eulerian (ALE) FEM for solving the Fluid structure Interaction. The response parameters include the top board displacement of the wall, sloshing height, shear stress and overturning moment. The study provides the change in the base shear and overturning moment of order 70-90 %.
