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Figure 9 Comparison of the relative vertical displacement on the long axis of the 500 kA cell

For this cell configuration, the effect of the temperature gradient and maximum

temperature reduction provided by the fins (Figure 8b) is almost completely
overshadowed by the increased wall stiffness. Once again, the forced-air cooling is the
most effective measure. In fact, it is too effective, resulting in a net displacement of the
same order of magnitude, but downward. The larger temperature difference between the
shell floor and sidewall is a likely explanation, given that the bending of the sidewall is
now about their intersection, as seen by the stress distribution shown in Figure 10. The
cradles are very stiff at this location, limiting the in plane bending.

Figure 10 von Mises equivalent stress distribution on forced-air cooled 500 kA cell