STUDIES ON THE STRUCTURAL BEHAVIOUR OF OPEN SHIPS UNDER TORSION

This paper describes the extent of investigations carried out between 1971 and 1975, and the main results. The purpose was to get a phenomenologically correct picture of the structural behaviour of open ships under torsion and to examine applicability and limitations of calculation methods commonly used. A theory for the structural behaviour of engine-rooms near midships was investigated and further developed. Studies were carried out with a plastic model test and finite element analyses. Comparisons were made with full-scale measurements reported by J. Lundgren and H. Stahlstierna, ref. (13). For detailed information compare the original reports, ref. (1-2).

• Supplemental Notes:
  • References: 1) Ulfvarson, A; (Analysis of the stress and deformation condition in a model of an open hull beam with a large torsion box amidships, (in Swedish).) 2) Ulfvarson, A (Phenomenological studies and practical calculations of open ships under torsion, (in Swedish).) 13) Lundgren, J; Stahlstierna, H; (Ships with large hatch openings. Full scale static torsional test on MS Antonia Johnson. The Swedish Ship Research Foundation, 1973.)
• Corporate Authors:

  KTH Royal Institute of Technology, Sweden

  Stockholm,   Sweden  SE-100 44
• Authors:
  • Ulfvarson, A
• Publication Date: 1975-7

Media Info

• Features: References;
• Pagination: 32 p.

Subject/Index Terms

• TRT Terms: Finite element method; Hatch covers; Hulls; Structural analysis; Torsional strength
• Old TRIS Terms: Hatch stress; Hull structural analysis
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00167724
• Record Type: Publication
• Source Agency: KTH Royal Institute of Technology, Sweden
• Report/Paper Numbers: Report No. E-46
• Files: TRIS
• Created Date: Jan 13 1978 12:00AM