基于板壳理论的多泡结构承压性能研究

To study the bearing capacity of multi-bubble structure under uniform radial external pressure, the strength and stability formulas of the three-cylinders intersecting multi-bubble structure was established based on the thin plate-shell theory. The accuracy of the formulas was verified by numerical simulation, and the reason for the error between the theoretical and simulation results was analyzed. Meanwhile, the bearing capacity of the structure was compared with that of the single-cylindrical shell with equal thickness. Results show that the theoretical formulas has certain applicability and effectiveness;when the contact angle of the structure is greater than 70°, the bearing capacity of the structure is better than that of the single-cylindrical shell;the larger the contact angle, the higher the internal space utilization of the glider. This structure can provide an effective way to solve the low utilization of the internal space of the blended-wing-body underwater glider.