The paper presents the latest developments in computer based design analysis at the Norwegian classification society Det Norske Veritas (DNV). Central in this system is the Ship Wave Analysis system SWAN, a complete 3D ship motions and loads program that accurately models the interaction between surface waves and the ship moving with forward speed. The paper describes the role of wave load computations in rule developments as well as strength verification of new designs. Accuracy requirements are discussed and specific aspects such as roll damping and the sensitivity of the results to the long term wave distribution are addressed. Techniques for structural response analysis related to the DNV computational ship analysis procedures are summarised. Modelling principles are discussed and reasons for specific choices of load application and associated acceptance criteria are outlined. Models in which rule loads are applied as compared to use of loads determined by direct hydrodynamic analyses are illustrated using a 5500 TEU container vessel as an example. Acceptance criteria for structural strength analysis are discussed. The failure modes include yielding, buckling, hull girder strength and fatigue.

  • Supplemental Notes:
    • PRADS 95, 6th Intl Symposium on Practical Design of Ships and Mobile Units; 17-22 Sept 1995; Seoul, Korea. Procs. Publ by Soc Naval Architects of Korea, ISBN 89-950016-2-3. Vol 2, p 2.1187 [16 p, 11 ref, 3 tab, 7 fig]
  • Authors:
    • Svensen, T E
    • Valsgard, S
    • Thorkildsen, H
  • Publication Date: 1995


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00727817
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM