COST-WEIGHT OPTIMIZATION OF NON-STEEL MIDSHIP SECTIONS

This material presents a procedure, which may be automated, for determining the least-weight and associated cost of midship hull structure composed of one or more isotropic, homogeneous materials. The procedure is founded on an existing procedure for design with steels which has been proven viable. The procedure designs plates and stiffeners using classical relations and the actual properties of the materials. For computing the section modulus of the hull, equivalent steel plate thicknesses and stiffener transverse dimensions, determined from a ratio of elastic moduli, are used. This is done even if no steel exists in a design. Transverse members are designed to a required steel section modulus. If a member is other than steel, the required section modulus becomes that of steel times a ratio of material strengths. An automated procedure of this material has been partially developed and is on file with the Department of Ocean Engineering at M.I.T. A detailed documentation of the automated procedure is not here presented, but, hopefully, will be forthcoming. The procedure was developed with aluminum in mind and a survey of its properties and qualities is included.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Ocean Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • Kenney, P M
  • Publication Date: 1975-3

Subject/Index Terms

Filing Info

  • Accession Number: 00099983
  • Record Type: Publication
  • Source Agency: Massachusetts Institute of Technology
  • Report/Paper Numbers: MS Thesis
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM