COMPUTER AIDED GEOMETRICAL VARIATION AND FAIRING OF SHIP HULL FORMS

Two distinct aspects of computer aided ship design are addressed in this thesis. First, a geometrical hull form modification technique employing the longitudinal repositioning of sections is developed. The second aspect deals with the mathematical representation of lines and line fairing. Before this is done however, justification is presented for utilizing third degree polynomials as an approximation to the spline curves of the naval architect. The results obtained indicate that a fairing procedure based on a least squares curve fitting criteria and a lines representation procedure based on parametric cubic equations could be adapted to generate faired hull forms from the roughest preliminary hull design. Additionally, the hull form modification technique could be programmed so as to produce the designs with desired values of C sub p, LCB, C sub w and LCF from a basis design of similar type. (Author)

• Corporate Authors:

  Naval Postgraduate School

  1 University Circle
  Monterey, CA  United States  93943
• Authors:
  • Haberlandt, F R
• Publication Date: 1978-5

Media Info

• Pagination: 159 p.

Subject/Index Terms

• TRT Terms: Algorithms; Approximation (Mathematics); Coefficients; Computer aided design; Curve fitting; Fairing lines; Geometry; Hulls; Hydrodynamics; Least squares method; Mathematical methods; Mathematical prediction; Naval architecture; Seakeeping; Splines; Theses; Variables; Vehicle design
• Uncontrolled Terms: Modifications; Ship design; Ship hulls
• Old TRIS Terms: Curve fitting methods; Hull forms; Hull geometry; Hull lines; Hydrodynamic configurations; Lines fairing; Variations
• Subject Areas: Data and Information Technology; Design; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00326103
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Master's Thesis
• Files: TRIS
• Created Date: Nov 19 1981 12:00AM