scholarly journals Inelastic Asymmetric Buckling of Ring-Stiffened Cylindrical Shells under External Pressure

AIAA Journal ◽  
1974 ◽  
Vol 12 (8) ◽  
pp. 1051-1056 ◽  
Author(s):  
L. H. N. LEE
Keyword(s):  
Cylindrical Shells ◽  
External Pressure ◽  
Stiffened Cylindrical Shells

A Study of General Buckling Strength of Ring-Stiffened Cylindrical Shells Under External Pressure and Effective Breadth of Ring-Stiffeners

2008 ◽  
Author(s):  
Takao Yoshikawa ◽  
Kenshi Yoshimura
Keyword(s):  
Cylindrical Shells ◽  
External Pressure ◽  
Shell Structures ◽  
Design Stage ◽  
Buckling Strength ◽  
Early Design Stage ◽  
Elastic Range ◽  
Plate And Shell ◽  
Stiffened Cylindrical Shells ◽  
Simplified Formula

Recently, we usually use the numerical method to calculate the buckling strength of plate and shell structures. But at early design stage, we even now use the theoretical or some simplified formula to check the buckling strength. For most of typical plate and shell structures, the precise formulas of buckling strength have been developed. For the general buckling strength of ring-stiffened cylindrical shell under external pressure in elastic range, the several formulas have been also proposed, but the accuracy of those are hardly adequate. In those formulas, the effective breadth of ring-stiffeners is introduced, but the exact value has not been presented. In this paper, the calculation procedure of effective breadth is developed based on mechanical consideration of pre-buckling deformation, and the modified simplified formula of general buckling strength of ring-stiffened cylindrical shells under external pressure in elastic range is proposed. Finely, the accuracy of proposed formula is confirmed by comparison with numerical results.

Inversion of the Eccentricity Effect in Stiffened Cylindrical Shells Buckling under External Pressure

1966 ◽  
Vol 8 (4) ◽  
pp. 363-373 ◽  
Author(s):  
J. Singer ◽  
M. Baruch ◽  
O. Harari
Keyword(s):  
Hydrostatic Pressure ◽  
Lateral Pressure ◽  
Cylindrical Shells ◽  
External Pressure ◽  
Pressure Loading ◽  
Physical Explanation ◽  
Eccentricity Effect ◽  
Geometry Parameter ◽  
Shell Geometry ◽  
Stiffened Cylindrical Shells

The analysis of the general instability of stiffened cylindrical shells under hydrostatic pressure carried out earlier is continued in order to study the inversion of the eccentricity effect: 500 typical shells of varying geometries are considered. The results show that for lateral pressure loading the inversion of the eccentricity effect is practically independent of the geometry of the rings but depends very strongly on the shell geometry parameter Z, whereas for hydrostatic pressure the inversion is also influenced by the bending stiffness of the rings. A range of inversion is found for both loadings. A detailed physical explanation of the cause of the eccentricity effect and its inversion is proposed.

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