A STUDY ON THE TORSIONAL STRENGTH OF LARGE CONTAINERSHIPS--THE EFFECT OF DOUBLE HULL STRUCTURE ON TORSIONAL STRENGTH

This report presents the results of theoretical and experimental investigation made on the torsional strength of large container ships having large hatch openings. Especially 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 a hollow cross section with multi-cells and the effect of the double hull structure of ship is directly developed. Furthermore, the influence of the cross deck between hatch openings is studied. A series of experiments was carried out and it has been confirmed that the 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 be neglected, because it is comparable with the shearing stress on the cross section under torsion. Also, the double hull structure and cross deck were found to increase effectively the torsional strength of ships.

• Corporate Authors:

  Japan Association for Technical Information

  4-7-107, Yamazaki-cho, Machida City
  Tokyo 194-01,   Japan 
• Authors:
  • Shimizu, S
  • Ushirokawa, O
• Publication Date: 1972

Media Info

• Pagination: p. 7-23
• Serial:
  • Japan Shipbuilding and Marine Engineering
  • Volume: 6
  • Issue Number: 6
  • Publisher: Japan Association for Technical Information

Subject/Index Terms

• TRT Terms: Construction; Containerships; Design; Shells (Structural forms); Structural analysis; Torsional strength
• Old TRIS Terms: Double shell construction
• Subject Areas: Construction; Design; Marine Transportation; Materials;

Filing Info

• Accession Number: 00044080
• Record Type: Publication
• Source Agency: Japan Association for Technical Information
• Files: TRIS, USDOT
• Created Date: May 11 1973 12:00AM