See Fig. 11 and FIG. 12 for the cloud chart of stress distribution after the combination of mode decomposition calculation results and design conditions. It can be seen from Fig. 11 that the stress distribution of the mode decomposition method is very similar to that of the bottom shear method. The maximum stress point is also located in the outer wall of the shell where the column is connected with the spherical shell, i.e. point a in the standard of steel spherical tank (GB / t12337-2014).<br>
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