Finite Element Analysis of Strength of an Oil Tank with the Hanging Valve Assembly

At first, this paper carries out a theoretical analysis on the radial displacement of the oil tank based on elastic mechanics. Secondly, a FEA model is built, in which the plate offset effect is considered for the variable thickness tank wall and the effect of the seismic load is analyzed. To improve the results, a sub model is built and analyzed in detail for the local place supporting the hanging valve assembly on the wall. The FEA results shows that a noticeable stress concentration phenomenon is formed at the joint between the tank wall and the pipe.