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Dive into the research topics where Ryuichi Nagamoto is active.

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Featured researches published by Ryuichi Nagamoto.


Journal of the Society of Naval Architects of Japan | 1974

Dynamical Ore Pressure on the Hold of Ore Carrier

Ryuichi Nagamoto; Shozo Fukuda; Koichiro Funaoka; Yajuro Seike; Tomiyasu Nohara

Generally, when designing the ore carrier, the Coulombs theory of soil mechanics is used to determine the ore pressure which acts on the tank walls. However, the are pressure calculated using the Coulombs theory is the static are pressure, and, actually, such factors as wave loads, ship motions, hull vibrations, etc., would demand due consideration. The authors, therefore, carried out some model tests to analyze the dynamic ore pressure and thereby formulated an experimental equation in order to estimate the ore pressure in more realistic manner. And, using the experimental equation thus formulated, the authors analyzed the distribution of ore pressure in the cargo tank of a 250, 000 tons deadweight ore carrier. Consequently it was found that the ore pressure acting on the longitudinal bulkhead in way of the wing-tank strut where a considerable amount of dynamic loads were exerted by wave, etc., would be 35 times greater than it was calculated using the Coulombs theory, as a result of the static ore pressure being superposed by dynamic ore pressure due to horizontal and vertical ship motions and by pressure from the spring action of ore due to deformation of the longitudinal bulkhead.


Journal of the Society of Naval Architects of Japan | 1988

Application of TMCP Type Stainless-Clad Steel Plates to Chemical Tankers

Masato Zama; Masahiro Saito; Hiroshi Yajima; Tsuyoshi Kabata; Nobuhiro Seki; Masataka Suga; Masaharu Honda; Ryuichi Nagamoto


Journal of the Society of Naval Architects of Japan | 1982

Fracture Toughness of 50kgf/mm2 Class New-CR Process Steel Plates

Ryuichi Nagamoto; Masao Ushijima; Akinobu Kawamura; Hiroshi Yajima; Masuo Tada


Journal of the Society of Naval Architects of Japan | 1972

Theoretical Calculation of Lateral Shear Force, Lateral Bending Moment, and Torsional Moment Acting on the Ship Hull among Waves

Ryuichi Nagamoto; Mamoru Konuma; Masabumi Iizuka; Masao Aoki; Takeshi Takahashi


Journal of Zosen Kiokai | 1967

Effectiveness of Crack Arrester (First Report)

Hiroshi Kihara; Takeshi Kanazawa; Kazuo Ikeda; Hiroshi Maenaka; Masaru Kinoshita; Ryuichi Nagamoto; Hiroshi Yajima


Journal of Zosen Kiokai | 1967

Effect of Low Cycle Fatigue on the Brittle Fracture Initiation Characteristics of Ship Steels

Masao Yoshiki; Takeshi Kanazawa; Susumu Machida; Hiroshi Tada; Hidekazu Yamanouchi; Ryuichi Nagamoto; Hiroshi Yajima


Journal of the Society of Naval Architects of Japan | 1979

On Sloshing Force of Rectangular Tank Type LNG Carrier

Ryuichi Nagamoto; Koichi Hagiwara; Tooru Hori; Akinobu Kawamura; Masaru Tateishi; Takayoshi Morio


Journal of the Society of Naval Architects of Japan | 1976

On the transverse strength of oil tanker in irregular seas

Ryuichi Nagamoto; Koichiro Funaoka; Michi Matsuyama; Hidetoshi Sueoka; Yoshiaki Taguchi; Tetsuo Yuhara


Journal of the Society of Naval Architects of Japan | 1976

Estimating the Design Values of Horizontal Wave Shearing Force Induced on the Ship Hull in Waves

Jun-ichi Fukuda; Ryuichi Nagamoto; Osamu Tsukamoto; Akiji Shinkai


Journal of the Society of Naval Architects of Japan | 1974

Estimating the Design Values of Vertical Shearing Force Induced on the Ship Hull in Waves

Jun-ichi Fukuda; Ryuichi Nagamoto; Osamu Tsukamoto; Akiji Shinkai

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Akinobu Kawamura

Mitsubishi Heavy Industries

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Masahiro Mori

Mitsubishi Heavy Industries

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Hiroshi Yajima

Mitsubishi Heavy Industries

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Kohichiro Funaoka

Mitsubishi Heavy Industries

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Koichiro Funaoka

Mitsubishi Heavy Industries

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Satoshi Izuchi

Mitsubishi Heavy Industries

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Koichi Hagiwara

Mitsubishi Heavy Industries

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