Effect of Stiffeners on Structural Behavior of Steel Liquids Tank

The finite element (FE) method is used to conduct an analysis of liquid storage tanks This research has focused on the behaviors, under static condition, free vibration and buckling of steel liquid tanks which are designed according to API 650 standards. The mechanical characteristics of the materials and the real geometrical and load measures have been considered in the numerical model. These storage
tanks are connecting with American standard steel shape profiles. The equivalent stress (Von-Mises) distribution, deformation in the circular wall of the liquid tank, buckling load and fundamental frequency are computed using finite element method in order to investigate the effect of type of the stiffener, number of course and location of stiffener on the structural behavior of liquid tanks. The uses of the stiffener decrease the stress of wall tank and improve the other structural behaviors.