STRUCTURAL SEAWORTHINESS DIGITAL COMPUTER PROGRAM ROSAS (A CONVERSION FROM SEAWORTHINESS ANALOG COMPUTER)

The structural seaworthiness digital computer program ROSAS and users manual are presented in this report. The program was developed using FORTRAN computer language, and it simulates the hull girder structural response of a ship, including dynamic effects when it encounters head seas of the regular, irregular, discrete, standing or other wave forms. Response calculations include the ship rigid and elastic body motion, bending moment, and shear. Vibratory hull girder modes can also be determined, and the effect of bow flare, bottom slamming and springing can be included. Computations have been compared with actual ship responses. The results are in good agreement with those obtained from actual ship sea trials, model experiments, a computer program developed by the Ship Structure Committee, and an earlier analog computer program developed by the David W. Taylor Naval Ship Research and Development Center. The program is a valuable tool for predicting hull girder response of new ship designs or to compare results of model or prototype data. (Author)

• Corporate Authors:

  Naval Postgraduate School

  1 University Circle
  Monterey, CA  United States  93943
• Authors:
  • Chuang, S L
  • Schroeder, E A
  • Wybraniec, S
• Publication Date: 1977-5

Media Info

• Pagination: 153 p.

Subject/Index Terms

• TRT Terms: Buoyancy; Computer programs; Hulls; Seaworthiness; Ship motion; Stresses; Structural analysis; Structural mechanics
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Ship hulls; Structural response
• Old TRIS Terms: Computer programs (Seaworthiness); Hull girder stresses
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00159073
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DTNSRDC-77-0001 R&D Rpt.
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM