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

Hence generalized stress is
SV2= f ± + (A)+o+ 2 - :,., (M) +
The coefiicient of safety is n=- -' ; n>I.
61 max
As seen from Fig. 5.15 and 5.18, tbe most stressed spot of
the shell is the circumference passing through point A.
Case 4.
Stresses in a supported shell loaded with pressure.
The edge of the shell has a hinged support (Fig. 5.19).
quantities r, h, E, p are given. Find ao, 0x, ar (M), w. The
initial
equation is
w , e-P-c (C, sin' .x +C CO oX). (5.24)
The
The following solution sequence is selected. We determine the
deformation of a free, unsupported shell under the action of pressure
p. Then we apply to the end of the shell force Q0 so that total
shell deformation at the support point is zero. This procedure
makes it possible to use the results of the preceeding calculations.
integral
Deformation of a free shell is
determined by the particular
Eh
where 6 is the bend of the free shell under the action of pressure p.
Fig. 5.18. Diagram of shell Fig. 5.19. Stresses in a shell
stresses.
with a hinged support.
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