Abstract
The nonlinear buckling of steel cone-segmented cylinders under external pressure has been investigated in this study. The cone-segmented cylinders in focus include four nominally identical cones closed by thick flat plates and their slant angles ranged from 0°–20° in every 1° increments. Note that the cylinder with a 0° slant angle forms a circular cylinder that is used for comparisons. Two nominally identical cone-segmented and circular cylinders have been fabricated, manufactured, measured, and tested. The numerical simulations for these cylinders are in good agreement with their experimental counterparts. Both linear and nonlinear buckling behaviors of the cylinders (both with and without imperfections) have also been evaluated, and the optimal slant angle can then be identified to be 6°–8°. These optimized imperfect cylinders yield buckling loads 1.7–2.8 times greater than those of an imperfect equivalent circular cylinder. Our results reveal a new finding that the average buckling load of the cone-segmented cylinders is approximately 2.3 times that of the equivalent circular cylinders.
| Original language | English |
|---|---|
| Journal | Ships and Offshore Structures |
| Early online date | 18 Mar 2024 |
| DOIs | |
| Publication status | E-pub ahead of print - 18 Mar 2024 |
Bibliographical note
Funding:This work was supported by National Natural Science Foundation of China [grant number: 52071160]; Science Fund for Distinguished Young Scholars of Jiangsu Province [grant number: BK20230014].
Keywords
- Cone-segmented cylinder
- linear buckling
- nonlinear buckling
- slant angle
- external pressure
