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

Finally, from formula (2.39) we determine
tI
The obtained value p = 3.3'105 N/m 2
indicatus that the selection of
AR has Moen unsuccessful since the pressure inside the shells
Pr = 10"102" H'/rm 2 . Let us continue calculations until we obtain the
full curve p f(AR), after assigning other values for AR (see
Table 2.1).
Table 2.1.
•' (3) C"
,_
(2) cjf c" -"
) C) -I-
A, .
A-AI 1()-3 2,72 5,44 811 9,52 10,90 13, 1 16,32
2 -=-9--at' 10-3 -7,ii8--.19- -- 2,24 -0,8P 0,50 3,21 5,92
3 10-3 1,06 3,7h 6,50 7,8V, 9,24 11,95 14,66
4 107 -21 ,4 -20,-I -16,& -- lV 8 18,8 20,8
5 C 107 19,4 27,1 8 9, .1 30 30,4 .31,2 31,8
A h'% 101 -- 32,1 -30,6 -25,2 -16,2 12 28,2 31,2
7 h"a lot 29,1 11,7 --1,1 -15 15,6 45.8 .17,7
8 (4)+(7) 10' -3 11,1 18,9 28,8 57,6 75 78,9
9 105 p= ('ý).'R
-3,3 12,1 20,6 31,: 62,5 81,5 85,5
KEY: (1) Line number; (2) Function; (3) Factor.
The results of cal,-ulation are presented in the form Lf a curve
(Fig. 2.39). On the figure we see the variations of a' and a" as
the function of AR. Nutc on these curves the points corresponding tL
the pressure pr" = 1 105 N/HM.
150