Table 6 Perfect cylinders: experimental and calculated buckling loads
External pressure | A1 | A2 | A3 | A4 |
|---|---|---|---|---|
\(P_{exp}\) | 0.021 | 0.019 | 0.020 | 0.0223 |
Fourier mode \(n_{exp}\) | 11 | 10 | 11 | 11 |
\(\frac{P_{exp}}{P_{E}}\) | 0.986 | 0.931 | 0.900 | 0.982 |
Fourier mode \(n_{E}\) | 11 | 11 | 11 | 11 |
\(\frac{P_{exp}}{P_{NL}}\) | 0.991 | 0.920 | 0.900 | 0.982 |
\(\frac{P_{exp}}{P_{NLP}}\) | 0.991 | 0.920 | 0.900 | 0.982 |
Axial compression | A5 | A6 |
|---|---|---|
\(F_{exp}\) | 11,000 | 9275 |
Fourier mode \(n_{exp}\) | 11 | 12 |
\(\frac{F_{exp}}{F_{E}}\) | 0.775 | 0.707 |
Fourier mode \(n_{E}\) | 2–15 | 2–15 |
\(\frac{F_{exp}}{F_{NL}}\) | 0.648 | 0.708 |
\(\frac{F_{exp}}{P_{NLP}}\) | 1.01 | 0.919 |