Design and Stress Analysis of Extraterrestrial ... - The Black Vault

nonuniformity of temperature distribution along the cross section,
which leads to additional stresses.
For the first evaluation of radiator pipe strength the following
calculation should be made. Tensile and compressive stresses for
the most heavily loaded pipes, which appear as a result of nonidentical
averaged temperature, should be evaluated. Based on the forces of
compression, their stability should be evaluated. Then we should
evaluate the stresses which appear as a result of the presence of
temperature gradients along the axis of symmetry of a pipe and its
cross section. And, finally, the stresses occurring in the pipe
where it is braced to the collector are evaluated. The last calculation
will not be studied in this section. Similar problems will
be examined in Chapter V.
Fig. 4.8.
Radiator diagram.
Thermal stresses in radiator pipes with
nonuniform heating
The ends of the pipes are rigidly attached. This case is of
interest from the point of view of the appearance of stresses in a
pipe under the worst possible conditions. The following are given
E, a, F and At, where At = t - to.
Temperature At is averaged.' This temperature along the axis
of the pipe is a variable quantity,
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