A STUDY ON THE TORSION STRENGTH OF SHIPS HAVING LARGE HATCH OPENINGS--THE EFFECT OF DOUBLE HULL STRUCTURE

This paper presents the results of theoretical and experimental investigations on the torsional strength of ships having large hatch openings, such as container ships and chip carriers. Expecially the effect of the double hull structure on the strength was studied. The feature of the method of calculation is that the ship structure is treated as a beam shell having multi-cell structure and the effect of the double hull is directly developed. Further, the influence of cross deck between hatch openings is studied. A series of experiments was carried out and it was confirmed that calculated results obtained through this method are in good agreement with experimental results. Warping stress on the cross-section of ships resulting from constraint of warping seems impossible to neglect, because it is comparable with the shearing stress on the cross-section under torsion. Also, the double hull structure and cross-decks were found to increase effectively the torsional strength of ships.

Supplemental Notes:
- Original Japanese copies, no charge; English copies, request price.
Corporate Authors:
Ishikawajima-Harima Heavy Industries Co., Ltd.

2-16, Toyosu 3 Chome, Koto-Ku
Tokyo 135, Japan
Authors:
- Shimizu, S
- Ushirokawa, O
- Yashima, H
Publication Date: 1972-3

Language

Japanese

Media Info

Features: Figures; Tables;
Pagination: p. 109-126
Serial:
- Ishikawajima-Harima Engineering Review
- Volume: 12
- Issue Number: 2
- Publisher: Ishikawajima-Harima Heavy Industries Co., Ltd.

Subject/Index Terms

TRT Terms: Construction; Hatch covers; Shells (Structural forms); Ship structural components; Torsion
Old TRIS Terms: Double shell construction; Hatch stress
Subject Areas: Construction; Marine Transportation; Materials;

Filing Info

Accession Number: 00043199
Record Type: Publication
Source Agency: Ship Structure Committee
Files: TRIS
Created Date: Apr 6 1973 12:00AM