Buckling strength

Inspection of equation 4-21 shows that the extra metal area added to the shell for stiffening increases the buckling strength of the shell in proportion to the square root. Extra metal area added to the shell thickness increases the buckling strength in direct proportion to the thickness. Therefore, it is more economical to stiffen a shell... 

To improve mechanical properties such as elongation, pliability, buckling strength, crease resistance, and deep-drawing ability... 

Primary attractions are low cost, low thermal diffusivity, high compression, and buckling strengths. The ability of concrete of reasonable thickness to withstand external accident or sabotage is also an important factor. 

It is significant that any additional area added to the sheli as stiffeners increases the buckling strength of the vessel in proportion to the square root whereas the additional metal area added uniformly to the shell by increasing its thickness will increase its strength in direct proportion. The obvious t onclusion is that it is more economical to. stiffen a shell by increasing the shell thickness than by adding stiffeners. 

The evaluation of the buckling strength under different conditions is quite complicated and can be found in Rotter (2001a), EN 1993-4-1 (2007) or EN 1993-1-6 (2007). 

The buckling equations developed by Von Karman and Tsien are the basis of the design equations developed by ASME. Von Kantian s equations, which are substantiated by tests, give a more accurate prediction of buckling strength of... 

Schneider W, Biede A (2005) Consistent equivalent geometric imperfections for the numerical buckling strength verification of cylindrical shells under uniform external pressure. Thin-Walled Struct 43(2) 175-188 Schneider W, Timmel I, Hdhn K (2005) The conception of quasi-collapse-affine imperfections a new approach to unfavourable imperfections of thin-walled shell stmc-tures. Thin-Walled Struct 43(8) 1202-1224 Stricklin JA, Haisler WE, von Riesemann WA (1973) Evaluation of solution procedures for material and/or geometrically nonlinear structural analysis. AIAAJll(3) 292-299... 

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