Effective plating in elastic–plastic range of primary support members in double-skin ship structures |
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Institution: | 1. Emeritus Professor of Naval Architecture and Engineering Mechanics, Pittsburgh, PA, USA;2. American Bureau of Shipping, Ret., Monroe Twp., NJ, USA;3. Bascom-Turner Instruments, Norwood, MA, USA |
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Abstract: | The main objective of this paper is to obtain the effective breadth of the flange plating of the primary support members in the double-skin ship structures in the limit state and an elastic–plastic range. A typical behavior of double-skin structures is qualitatively studied on the basis of nonlinear finite element (FE) analysis of a wide box-like beam. Quantitative evaluations of the breadth of the effective plating are obtained from the FE parametric study of the plates under an in-plane load. The distribution of normal stress in the cross section of a plate (beam flange) in the limit state is found to be close to uniform. The formulations for the effective plating breadth of double-skin structures in the elastic–plastic range are also presented. |
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