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

Case 3. The shell is loaded simultaneously by axial compressive
stress a and lateral pressure p (Fig. 4.42).
The stability condition for this case [33]
@59 Pq~
where a is determined from formula (4.21), PpT fro formula (4.19)
T f oP
or formula (4.20).
% I I
SFig. 4.411. Stability losses in Fig. 4.42. Stability losses in a
Sa long shell over the action of cylindrical action of lateral shell with p.ressure the Joint ad
axial force.
Saxial
compressive stresses.
0,2E S
iCase 4. The shell is loaded along the ends by bending moment
(pure bend) only, as shown in Fig. 4.43.
Critical stress [11] is
490