The U-type stiffener is widely used in hatch cover design for cargo holds due to its easier fabrication, maintenance and painting. However, its ultimate strength evaluation method under axial compression is still unclear. The existing formula for ultimate strength evaluation of stiffened panel is not applicable to U-type stiffened panels of hatch cover with thinner deck plate, wider plate breadth between stiffeners, and longer stiffener span. This paper is to find an accurate method for evaluating ultimate strength of U-type stiffened panel for hatch cover. Based on extensive non-linear FE results, a simple formula is proposed to evaluate the ultimate strength of the U-type stiffened panel under axial compression, which is well in agreement with the FE results and 30 model test results. At last, it is proved that the U-type structure will have a great influence on the lightweight design of hatch cover.
Ultimate strength of U-type stiffened panels for hatch covers used in ship cargo holds
Ships and Offshore Structures ; 16 , 3 ; 280-291
2021-03-16
12 pages
Article (Journal)
Electronic Resource
Unknown
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