艤装品サポート基部の甲板応力挙動に関する研究

概要

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Lots of out-fittings supports are welded to the strength deck plate of a vessel. It is important to study the stress behavior in the deck plate near the foundation of the supports, because fatigue cracks likely to occur due to the stress concentration induced by them. In this paper, stresses near the welding beads of supports are investigated in detail. Firstly, the influence of the design parameters such as the thickness of the deck plate, the size of the pad plate and the shape of the support are clarified by the plate model FE analyses. Secondary, the estimation method of the hot spot stress for these structures is evaluated from the results of the solid model and plate model FE anslyses. As a reslut, it is found that SR202 B method is suitable and the plate model FE analyses is useful as a substitute for the solid model FE analysis. Additionally, for the convenience of the design works, the simplified formulas to estimate the hot spot stress is investigated and the accuracy of them is confirmed.
社団法人日本船舶海洋工学会の論文
1998-09-04