著者
高川 真一 森鼻 英征 下田 廣一郎 山内 裕 神野藤 保夫 井上 和也
出版者
公益社団法人 日本船舶海洋工学会
雑誌
関西造船協会誌 214 (ISSN:03899101)
巻号頁・発行日
pp.177-185, 1990-09-25 (Released:2018-04-01)

The pressure hull of deep submergence research vehicle is an utmost important structure that secures the safety of crew members against the hydrostatic pressure in deep sea, and should be as compact in size and light in weight as possible in order to obtain easy operation and high maneuverability of the vehicle. In design and fabrication of the pressure hull, the application of high strength material which has reliable characteristic for practical use, of design method suitable for such material and fabrication procedure which satisfies the quality requirement of the highest degree have been encouraged. In the develoment of the 6500m deep submergence research vehicle "SHINKAI 6500", which is the latest submergence research vehicle following the 2000m deep submergence research vehicle "SHINKAI 2000" in Japan, the investigation in various fields was carried out in order to adopt titanium alloy, which has superior strength/weight ratio, for the pressure hull. The production procedure of heavy thickness and large size plate and forging material, and the fabrication procedure of the pressure hull were investigated by the fabrication of the full scale model made of titanium alloy and by material tests with specimens cut from the model. The collapse behaviour was examined by collapse tests using scale models of titanium alloy and by nonlinear behaviour analysis with FEM procedure. Finally, in order to confirm both the fabrication procedure and design method in total, the cyclic loading test and collapse test using scale model fabricated according to the procedure equivalent to that for the actual pressure hull. This paper presents the design and fabrication of the pressure hull of "SHINKAI 6500".
著者
井上 和也 安田 龍介 池田 有光
出版者
Japan Society for Atmospheric Environment
雑誌
大気環境学会誌 (ISSN:13414178)
巻号頁・発行日
vol.37, no.5, pp.282-301, 2002-09-10 (Released:2011-11-08)
参考文献数
28

霧が発生すると, 可溶性の物質は霧に溶け込み, 更に液相で化学反応を受けるなどして影響を受けることはすでに良く知られている。しかし, 霧が存在することによる大気汚染物質の挙動への影響はこれだけではないと考えられる。すなわち, 霧が生じることにより大気の成層状態が変化し, 乱流拡散能が変化することを通して, 大気汚染物質の物理的な挙動も影響を受けると考えられる。本研究では, 霧が存在することによる大気汚染物質の挙動への影響, 特に地表面への沈着量への影響について, 気象モデル, 沈着モデル, 液相化学モデルを組み合わせて数値シミュレーションを行うことにより調べた。対象とした期間は霧が頻発する夜間である。本研究で得られた主な結果は以下の通りである。(1) 霧が発現すると, 大気成層状態は霧層下層で不安定化, 霧層上部で安定化することが確認された。(2) 地表面への沈着量は, 霧への溶解や液相での酸化反応などしない物質でさえも (1) の効果によって増大する。(3) 総硫黄成分の沈着量も, 霧が出現する場合には増大し, 特に, 硫酸イオンの沈着量は, 霧粒への溶け込みや液相酸化反応などの影響に (1) の効果も加わり, 数十倍程度大きくなる。得られた結果は, 大気汚染物質の沈着量を推定する際には, 霧水による沈着, また, 霧が作り出す温度環境のもとで沈着が増大する効果も適切に取り入れる必要があることを示唆した。
著者
高川 真一 森鼻 英征 下田 廣一郎 山内 裕 神野藤 保夫 井上 和也
出版者
公益社団法人日本船舶海洋工学会
雑誌
関西造船協会誌 (ISSN:03899101)
巻号頁・発行日
no.214, pp.177-185, 1990-09-25
被引用文献数
1

The pressure hull of deep submergence research vehicle is an utmost important structure that secures the safety of crew members against the hydrostatic pressure in deep sea, and should be as compact in size and light in weight as possible in order to obtain easy operation and high maneuverability of the vehicle. In design and fabrication of the pressure hull, the application of high strength material which has reliable characteristic for practical use, of design method suitable for such material and fabrication procedure which satisfies the quality requirement of the highest degree have been encouraged. In the develoment of the 6500m deep submergence research vehicle "SHINKAI 6500", which is the latest submergence research vehicle following the 2000m deep submergence research vehicle "SHINKAI 2000" in Japan, the investigation in various fields was carried out in order to adopt titanium alloy, which has superior strength/weight ratio, for the pressure hull. The production procedure of heavy thickness and large size plate and forging material, and the fabrication procedure of the pressure hull were investigated by the fabrication of the full scale model made of titanium alloy and by material tests with specimens cut from the model. The collapse behaviour was examined by collapse tests using scale models of titanium alloy and by nonlinear behaviour analysis with FEM procedure. Finally, in order to confirm both the fabrication procedure and design method in total, the cyclic loading test and collapse test using scale model fabricated according to the procedure equivalent to that for the actual pressure hull. This paper presents the design and fabrication of the pressure hull of "SHINKAI 6500".