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

2500-
2000
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1000 Y -
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0 2 4 6 6 1C y 1 a
Fig. 5.61. Plate with opening. Fig. 5.62. Rigidity of flexible
plate with opening.
Bellows analysis
The bellows, or fluted adapter, is a cylindrical body with waveshaped
folds applied along the circumference. The shapes of the
folds or corrugation, in axial cross section and with various
designs of bellows are shown in Fig. 5.63. The most widespread shape
of corrugation, which has the least rigidity, is shown in Fig. 5.63a.
Bellows with such corrugation are called packed bellows. Technologically
simpler forms are encountered (Fig. 5.63b, c). If in
the internal cavities of the bellows there is a liquid or gas
under high pressure, the corrugation is fastened by rigid rings
(Fig. 5.63d).
The main advantage of the bellows lies in its ability, under
the effect of a small end thrust, to give noticeable elastic
elongation or compression depending upon the direction of the
effective forces. This has brought about the widespread use of
bellows in the most varied elements of motor design.
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