NOTES ON SCHEMATISATION OF TANKERS BY MEANS OF PLANE GRILLAGE

ALCUNE CONSIDERAZIONI SULLA SCHEMATIZZAZIONE DELLE NAVI CISTERNE PER MEZZO DI GRIGLIATI PIANE

The ship chosen as a model for the carrying out of the various calculations is a tanker about 200,000 TDW having two longitudinal bulkheads and one longitudinal centre line girder. The cargo-tank zone is constituted by five central tanks and ten wing tanks, all of the same length. At the center of each tank a wash bulkhead is fitted. Since this study examines questions relating both to longitudinal and to transverse strength, two grillages have been considered: one extended to the whole cargo-tank zone, the other to three tanks. Tables are provided summarizing the calculations carried out with the purposes of analysing: a) the influence of the distribution of the ships inertia between side-shell and longitudinal-bulkhead members; b) the influence of the geometric properties of the beam equivalent to the transverse frame inside the wing tanks; c) the influence of the geometrical properties of bottom centre-line girder sections adjacent to the transverse bulkheads; d) the difference between a completed grillage and one formed by the bulkheads only; e) the effect of boundary conditions; f) the influence of the way in which the grillage is being loaded.

• Corporate Authors:

  Registro Italiano Navale

  20 Via Vente Settembre
  Genoa,   Italy 
• Authors:
  • Squassafichi, N
  • Vidulli, G
• Publication Date: 1970-7

Media Info

• Features: Figures; Tables;
• Pagination: 43 p.
• Serial:
  • Issue Number: 39

Subject/Index Terms

• TRT Terms: Hulls; Longitudinal strength; Structural analysis; Tankers; Transverse strength; Vehicle design
• Uncontrolled Terms: Ship design
• Old TRIS Terms: Hull strength
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00014648
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 12 1972 12:00AM