EFECT OF SLOSHING ON THE INTERNAL STRUCTURAL MEMBERS OF TANKS

This article is based on a project organised by the Swedish Ship Research Foundation in which Lloyd's Register, Bureau Veritas, Det norske Veritas, and four major Swedish shipyards co-operated to study sloshing and its effects on the internal members of cargo tanks. The main objective was to establish a basis for determining the sloshing forces acting on the transverse members, stringers, and other members when the tanks are part-filled. Tests, with model prismatic tanks having different internal structures, were conducted to determine the liquid levels that are critical in relation to sloshing forces, to study the validity of linear superposition, and to determine the influence of geometrical and other parameters. The tests, and the theoretical analysis of impacts, are briefly discussed. In the tests, it was found that, for the tanks studied, under pitching excitations the filling of the tank to 45% of its height led to the most severe loads on bottom transverse members; filling to 75% gave the largest forces on the bulkheads and deck transverses. In tests on transposing model results to full scale, it was found that the duration of impact was a fundamental parameter; the problem of similitude of impulsive phenomena will thus be of first importance in future studies. Several other conclusions are drawn. Order from BSRA as No. 50,630.

  • Corporate Authors:

    Bureau Veritas

    One Western Union International Plaza
    New York, NY  United States  10004
  • Authors:
    • Huther, M
  • Publication Date: 1978-12

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00196030
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM