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Table 1 Characteristics of the cylinders and experimental buckling loads

From: ASTER Shell: a simple concept to significantly increase the plastic buckling strength of short cylinders subjected to combined external pressure and axial compression

External pressure A1 A2 A3 A4
h (\(\upmu \text{m}\)) 150 150 154 158
R/h 500 500 487 475
Z 1220 1220 1190 1160
E (GPa) 162 155 158 152
\(P_{exp}\) Buckling pressure (MPa) 0.021 0.019 0.020 0.0223
\(P_{E}\) (MPa) 0.0213 0.0204 0.0222 0.0227
\(\frac{P_{exp}}{P_{E}}\) 0.986 0.931 0.900 0.982
Fourier mode n 11 10 11 11
Axial compression A5 A6
h (\(\mu m\)) 150 148
R/h 500 500
Z 1220 1933
E (GPa) 163 155
\(F_{exp}\) Buckling load (N) 11,000 9275
\(F_{E}\) (N) 14,193 13,125
\(\frac{F_{exp}}{F_{E}}\) 0.775 0.707
Fourier mode n 11 12