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| Optimization Design of Composite Pressure Shell for Underwater Vehicles |
| Received:June 02, 2023 Revised:July 11, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.09.006 |
| KeyWord:submarine composite material optimization design stability strength theory ultimate load |
| Author | Institution |
| MA Cheng |
Harbin Engineering University, Harbin , China |
| LI Xian-dong |
Harbin Engineering University, Harbin , China |
| XU Wei-jun |
Harbin Engineering University, Harbin , China |
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| Abstract: |
| In order to enhance the submergence depth of underwater vehicles, the work aims to use composite materials as a pressure-resistant structure for underwater vehicles instead of high-strength steel materials, so as to conduct optimization design research on this structure to explore its ability to increase the ultimate submergence depth of pressure shells and reduce structural weight. The step-by-step optimization design method was adopted to optimize the pressure shell. During optimization of pressure shell, the effects of layer percentage, angle, and thickness on the stability and ultimate load of the shell were considered. During optimization of ring rib form, the effect of rib ply on stability was considered based on the stress situation of the ribs. Under the same thickness of the pressure shell, the instability pressure of the pressure shell was increased by more than 56.06% through shell layer optimization. After the rib optimization, the ultimate diving depth was increased by about 26.67% compared with the "Sea Wolf" class submarine, and the weight of the composite pressure shell was reduced by about 80% compared with the high-strength steel pressure shell. Through the step-by-step optimization method, it can be obtained that the main shell layer of the underwater vehicle pressure shell is [0/±45/0/0/±45/0/90/0]s, with a single layer thickness of 1.5 mm. The form of the ring rib is T-shaped, and the ring rib panel and web are laid in a circumferential direction. |
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