巻号一覧
60 巻 (2022)
- 6 号 p. 268-
- 5 号 p. 220-
- 4 号 p. 156-
- 3 号 p. 110-
- 2 号 p. 52-
- 1 号 p. 4-
前身誌
60 巻, 2 号
選択された号の論文の4件中1～4を表示しています
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論文
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（第３報：第２塑性関節を考慮した平面歪み解析）山内 芳彦, 清野 昇亨, 青木 淳, 宮内 孝2022 年 60 巻 2 号 p. 52-66
発行日: 2022年
公開日: 2022/04/29
ジャーナル フリーOil storage tanks are usually constructed directly on tank foundations without anchors. In such a flat-bottom cylindrical tank subject to seismic horizontal force, a part of the bottom plate adjacent to the shell will be lifted off the tank foundation by the overturning moment, and excessive plastic strain cyclically occurs at the toe of the inside fillet weld of the shell-to-bottom joint. In the previous papers, expanding the basic theory of Elastic-Plastic Hinge Method (E.P.H.M.) to uplift behavior of flat-bottom of cylindrical tank in consideration of the elastic deformation of the tank sidewall, and calculations are carried out for a 32,000kl oil storage tank of high strength steel SPV490Q.
In this paper, the equilibrium equation in consideration of 2 elastic-plastic hinges of uplifted bottom plate is formulated, and analytically calculations are carried out for a 18,200kl oil storage tank of middle strength steel SM490C. Then, the effectiveness of this method is shown by comparing it with results of FEM non-linear analysis.抄録全体を表示PDF形式でダウンロード (1837K) -
木内 晃2022 年 60 巻 2 号 p. 67-74
発行日: 2022年
公開日: 2022/04/29
ジャーナル フリーIn COD tests of welded joints, local compression technique and reverse bending technique have been used in order to get satisfactory fatigue crack shape. At present, the local compression technique is most reliable, but thick plates require a testing machine that exceeds 1 MN. On the other hand, the revers bending technique lacks reliability due to lack of published data, but it has the great advantage that it can be handled by a testing machine that conducts COD tests. In this report, the recommended reverse bending load, Prb is examined by a simple method utilizing linear fracture mechanics. It results in the following conditions. Here, PL is a limit load defined by Eq. (2) in the text.
Prb/PL＝0.7～1.0 for V notch angle＝60°, Prb/PL＝0.8～1.0 for V notch angle＝30°抄録全体を表示PDF形式でダウンロード (1071K)
解説
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吉田 聖一2022 年 60 巻 2 号 p. 75-83
発行日: 2022年
公開日: 2022/04/29
ジャーナル フリーOn September 28, 2019, the Cayman Islands registered chemical tanker Stolt Groenland ruptured causing an explosion and fire in Ulsan, Republic of Korea. The rupture of the styrene monomer cargo tank resulted from a runaway polymerisation that was initiated by elevated temperature by heat transfer from other chemical cargos. The investigation report has been released on July 20, 2021 by the Marine Accident Investigation Branch (MAIB) of UK. This paper describes the incident based on the MAIB report.抄録全体を表示PDF形式でダウンロード (948K)
報告
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寺田 進2022 年 60 巻 2 号 p. 84-91
発行日: 2022年
公開日: 2022/04/29
ジャーナル フリーThis article describes the author’s activity of HPI Subcommittee on code and standard for high pressure vessels and ASME Subcommittee on high pressure vessels. The author has been appointed the committee member of Subcommittee on high pressure vessels of ASME Boiler and Pressure Vessel Committee since 2000. The author proposed many modifications and developments for ASME Sec. VIII Div.3 (ASME Div.3) and most of them were approved by Board and these proposed changes have been incorporated in ASME Div.3.抄録全体を表示PDF形式でダウンロード (992K)
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