著者

安藤 孝弘 田中 義照 佐久間 正明 遠藤 久芳 Takahiro ANDO Yoshiteru TANAKA Masaaki SAKUMA Hisayoshi ENDO 国土交通省船舶技術研究所構造強度部 国土交通省船舶技術研究所機関動力部 国土交通省船舶技術研究所構造強度部 国土交通省船舶技術研究所構造強度部

雑誌

船舶技術研究所総合報告資料

巻号頁・発行日

vol.平成12年度, pp.85-112, 2001-03-31 (Released:2017-04-14)

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Recently, the extensive use of high-tensile steel for ship hull structures has realized the decrease of plate thickness, under the design condition that no members yield for the design loads. However, the post buckling design as well as air planes is required to aim at the further making the most of high-tensile strength. This study had been performed as a designated study of Ship Research Institute for three years, in order to investigate the applicability of the post buckling design for ship structures assembled by welding. The details are as follows: ・Investigation of buckling analysis methods of panel or stiffened panel ・Model tests and numerical analysis of stiffened panel ・fatigue tests of stiffened panel subjected to pulsating compressive and shear load ・Investigation of the applicability of the post buckling design for ship structures

著者

田中 義照 遠藤 久芳

出版者

The Japan Society of Naval Architects and Ocean Engineers

雑誌

日本造船学会論文集 (ISSN:05148499)

巻号頁・発行日

vol.1988, no.164, pp.456-467, 1988 (Released:2010-05-07)

参考文献数

23

被引用文献数

17 30

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Though a lot of experimental and theoretical investigations on the strength of stiffened plates in compression have been carried out, there are few to suggest the rational correlation between panel and stiffener associated with their local buckling and collapse. The main purpose of the paper is to present a method of analysis which may be effective not only in estimation of ultimate strength but also in mode shape analysis taking account of the interaction between panel and stiffener.The proposed procedure is composed of two parts, elastic large deformation analysis and rigid-plastic analysis. The fundamental concept of method was proposed by Fujitao and it has been developed to be applicable to the problem relating with panel-stiffener interaction. The presented method has been verified through comparing its results with the experiment and FEM calculation and it has been found to be practical for the estimation of ultimate load and post-buckling behavior of stiffened plates with flatbar stiffeners.Through the mode shape analysis, has been obtained a clear scope for the local collapse mode, which had been most commonly observed in the experiment conducted with continuous multi-span models.The critical slenderness ratio of flatbar stiffener has been studied through the analyses. They show that there is a threshold of the slenderness ratio, h/ts, over which the dominant buckling mode in a stiffener changes from a panel-buckling-induced one to an inter-frame overall and the buckling strength rapidly decreases. The critical value is found to be about 18, which indicates the existing rule requirements are a little too conservative.