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Publications
Zhang, X., Lu, H., Guedes Soares, C. and Pan, G. (2025), Effect of rib profile on critical buckling pressure of ring-stiffened composite shells under hydrostatic pressure, Applied Ocean Research, Vol. 20(7), 901-911.
The buckling behaviour of thin-walled composite cylindrical shells with different rib profiles under hydrostatic pressure is studied in this paper. Various models of composite shells with outer diameter of 324mm, thickness of 8mm, and length of 800mm, stiffened with 4 ring ribs and all with the same material parameters for the shells and ribs are configured. Ribs have the same sectional areas and the total height is no more than 18mm, but there are 15mm different rib profiles. To calculate the critical buckling pressures of composite shells with the above configurations, finite element (FE) models are built and validated by published experimental and FE results. The results for each model are obtained and the effect of rib profiles on the critical buckling pressure of composite shells subjected to hydrostatic pressure can be derived from the results. The results showed that the critical buckling pressure of ring-stiffened composite shells can improve by 43.8% to 136.3% compared to that of unstiffened composite shells. The rib total height, web thickness, and rib profile type are three factors that affect the critical buckling pressure of ring-stiffened composite shells. The composite shell stiffened by a rib profile type of groove shape can acquire maximum buckling-carrying capacity.
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