著者
白石 隆義
出版者
公益社団法人日本船舶海洋工学会
雑誌
日本造船学会論文集 (ISSN:05148499)
巻号頁・発行日
no.125, pp.437-445, 1969-06

Japanese National Reilways has developed a new type berth fender for railway ferry berth, The fender is mainly composed of a box shaped steel slab whose front surface is smooth, and several water pressure shock absorbers which are made or rubber bags and attached to the back surface of the slab. The shock absorbing and damping properties of the absorber were proved excellent by half scale model tests. The results of the tests were compared with the results of approximate calculation.A trially constructed fender of this type (size=8 m×4 m) was fitted on a railway ferry berth in Uno port. Full size shock tests were carried out on this fender, and the results indicated the allowable breth touching speed might be doubled.
著者
小岩 健 寺尾 貞一 和辻 春樹 氏家 竹次郎
出版者
公益社団法人日本船舶海洋工学会
雑誌
造船協會會報 (ISSN:05148499)
巻号頁・発行日
no.69, pp.175-203, 1942-07-20

For improving the quality of riveted joints, authors studied on matter of MS, HT and SS rivets, by means of chemical, mechanical and photomicrographical method, and concluded the relation of strength between their rivets and riveted joints.
著者
前田 久明 増田 光 林 昌奎 居駒 知樹 伊藤 和彰 加納 裕三
出版者
公益社団法人日本船舶海洋工学会
雑誌
Techno marine : bulletin of the Society of Naval Architects of Japan : 日本造船学会誌 (ISSN:09168699)
巻号頁・発行日
no.866, 2002-03-10

本論文の目的は,幾何学相似モデルを用いた実験を行い,VIVによるライザーの挙動を把握することである。海象条件を模擬した一様流中,あるいは波浪中,強制動揺下においてライザーの挙動計測実験を行い,結果として,VIVがライザーの高次モードの変形に寄与していることを把握した。また,ライザーのトップテンション,表面粗度がライザーの挙動に大きく影響することを確認した。[graph]
著者
越賀 房夫 田中 甚吉 栗田 義之
出版者
公益社団法人日本船舶海洋工学会
雑誌
日本造船学会論文集 (ISSN:05148499)
巻号頁・発行日
no.129, pp.267-276, 1971-06
被引用文献数
2

Effects of stress-relieving heat treatment on brittle fracture initiation in welded structures are quantitatively discussed in terms or fracture mechanics. The basic concept employed for discussion is that brittle fracture should initiate when tensile yield zone formed ahead of a pre-existing crack attains a critical size depending on the material. The critical zone size as a function of temperature is predictable from Charpy-V transition temperature. Metallurgical information on welding residual stress and Charpy-V data for various conditions of heat treatment is compiled and put into the proposed logical frame of fracture mechanics. There is a divergence of conclusion for every case of steel type. Cases studied are those of an ordinary mild steel, two kinds of quenched-and-tempered high strength steels and a Mn-Mo steel for nuclear pressure vessels.
著者
上田 武志 岩崎 泰典 按田 正樹 箙 一之
出版者
公益社団法人日本船舶海洋工学会
雑誌
関西造船協会論文集 (ISSN:13467727)
巻号頁・発行日
no.243, pp.1-7, 2005-03-25

"SEA-Arrow", developed by Kawasaki Shipbuilding Corporation, is an advanced new bow form for medium-speed ships such as LPG carriers. The bow end form of SEA-Arrow around the loaded draught is much sharper than that of conventional hull ships. With SEA-Arrow, bow waves are greatly reduced in loaded condition compared with conventional hull ships. Model tank test results show that SEA-Arrow can reduce the wave resistance to a half and the required main engine horsepower by 6-10%. On the other hand, the superiority of SEA-Arrow ships' propulsive performance in loaded condition cannot be verified in sea trial because actual ships' speed tests in sea trials are generally carried out in ballast condition except oil tankers. Therefore, the authors have analyzed, to confirm the high propulsive performance of SEA-Arrow ships, the voyage data of three SEA-Arrow ships and one conventional hull ship, which are sister ships of 59,200m3 LPG carriers. The results show that the propulsive performance of the SEA-Arrow ships is superior to that of the conventional hull ship and that its analyzed speed advantage agrees with the estimate from the model tank test results.
著者
K.M.
出版者
公益社団法人日本船舶海洋工学会
雑誌
造船協会雑纂 (ISSN:03861597)
巻号頁・発行日
no.190, pp.2-3, 1938-01