著者

松倉 洋史 三友 信夫 松岡 猛 運輸省船舶技術研究所システム技術部 運輸省船舶技術研究所システム技術部 運輸省船舶技術研究所システム技術部

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.37, no.1, 2000

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

成合 英樹 運輸省船舶技術研究所原子力船部

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.16, no.4, 1979

著者

三友 信夫 松倉 洋史 松岡 猛 Nobuo MITOMO Hiroshi MATSUKURA Takeshi MATSUOKA 運輸省船舶技術研究所システム技術部 運輸省船舶技術研究所システム技術部 運輸省船舶技術研究所システム技術部

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.37, no.3, pp.77-141, 2000

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For large and complex systems, full and enough investigation is required not to damage the public or operators, before design, construction and operation. Especially chemical plant, nuclear power plant and ships etc. must not cause any large accidents because of the safety of the public or lots of people working there. So, the new assessment, PSA (Probabilistic Safety Assessment), becomes popular in addition to deterministic safety assessment for these complex systems. In this paper, as an example of an application of PSA for the marine field, the event tree analysis method was applied to the Titanic accident. Factors which related to the Titanic accident were all selected under the those day's surrounding condition. The occurrence probabilities of the factors have been estimated from various data. The probability that the Titanic encounters the sever accidents, and number of fatality have been calculated. This report has shown the detailed procedure of event tree analysis for a marine accident. It has also shown the effectiveness of event tree analysis for the analysis of accident causes and for the improvement of the safety for various large complex systems.

著者

二村 正 石田 茂資 渡辺 巌 Tadashi NIMURA Shigesuke ISHIDA Iwao WATANABE 船舶技術研究所運動性能部 船舶技術研究所運動性能部 船舶技術研究所運動性能部

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.32, no.5, pp.233-264, 1996-02

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Capsizing and re-righting performance of three types of sailing yachts, IOR racer type, conventional type and intermediate type, was experimentally investigated in beam transient waves with various wave heights. The effect of CG height, existence of mast and flooded water volume on the critical wave height for capsizing and for re-righting was examined. It was characteristic in the capsizing motion of the models with mast that the rolling motion almost stopped just after the mast plunged into the water because of the hydrodynamic impulsive force on the mast. The stopping heel angle was almost independent of hull forms and model conditions. As a result the static stability vanishing angle, θv, was crucial for capsizing even in flooded conditions. As for re-righting motion θv was also crucial. It was clarified that the IOR racer type yacht is easier to capsize and harder to re-right because of its small θv value even if it has large GM. The way of improving the capsizing resistance was discussed. Lowering the center of gravity or attaching a small float on top of the mast could be an easy and effective way to prevent capsizing disaster because that leads to a large θv value. The flooded water, in general, enlarged θv, that made the models capsize-resistant. But for re-righting motion the relation between the critical wave height for re-righting and θv was complicated, because the water prevents the motion of the models at the same time. The probability of capsizing and re-righting in a sea state with ISSC spectrum was examined. Moreover the capsizing duration time was calculated as a safety index. It was reconfirmed again by the probabilistic approach that θv is very important for the safety of sailing yachts. θv of 120 degrees was proposed as an safety criteria.

著者

山越 寿夫 片岡 巌 山越 寿夫 竹内 清 金井 康二 伊藤 泰義 植木 紘太郎 野間口 道義 綾 威雄 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.8, no.7, pp.207-208, 1971-12

著者

花岡 達郎 Tatsuro Hanaoka 運輸省船舶技術研究所運動性能部

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.5, no.6, pp.217-257, 1969-01

被引用文献数

3

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The purpose of the present paper is to give a fundamental theory of hydrodynamics concerning a screw propeller on the status of both potential and vortex theory.Chapter 1 is a brief description regarding historical aspect of the recent development in propeller theory.Chapter2 is devoted to the theory of a wing with finite span. We have been made familiar with propeller theory through wing theory. The description will be useful for us to understand the remainder of this paper.In this paper the propeller theory consists of three parts. The first deals with the fundamentals of the theory in the frame of linearized theory in Chapter 3.In Chapter 4 and 5, the theory previously discussed is developed to nonlinear theory and theory of wake-adapted propellers.