STUDIES ON OPTIMIZATION OF SHIP STRUCTURES (1ST REPORT) NONLINEAR PROGRAMMING AND OPTIMUM DESIGN OF BOX AND I- SECTION GIRDERS

For the purpose of establishing optimization of ship structure, studies were undertaken on nonlinear programming procedures and the elemental computer program was developed by authors, which consists of the SUMT method incorporating the DFP method. As the first step towards whole ship structure, some optimum design analyses for box and I-section girders mainly adopted in ship structure were conducted by using this program and discussion of solutions obtained led to conclusions as follows. I. nonlinear programming procedure can be succesfully applied to the problems of structural design, which are usually formulated in nonlinear functions. Despite the solution obtained not always being unique optimum, we can find out the optimum solution applicable to design with sufficient examination of solution. II. optimum design shapes of box and I-section girders in regard to girder length and applied load are presented. Optimum design of these plate girders being fairly affected by the web height, constrained functions against the web height should be carefully selected.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Akita, Y
  • Kitamura, K
• Publication Date: 1972

Media Info

• Pagination: p. 101-119
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 10
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Computer aided design; Design; Girders; Nonlinear programming; Ships
• Old TRIS Terms: Girder design; Ship structures
• Subject Areas: Design; Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00035173
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM