ESTIMATION OF DIRECTIONAL FREQUENCY RESPONSE FUNCTIONS OF A FLOATING OFFSHORE STRUCTURE BASED ON EXPERIMENTS IN DIRECTIONAL SPECTRUM WAVES (2ND REPORT)

Estimation of directional frequency transfer functions of floating offshore structures is important to estimate their behaviour in realistic short crested irregular waves (such waves are called directional spectrum waves). Although there are some theoretical calculation methods for such directional response functions, there are few experimental results confirming theoretical results. Square basins are needed for such experiments. In the first report (see abstract no 92051143) the authors showed the method of inverse estimation of directional transfer functions of a floating offshore structure using results of a few experiments in directional spectrum waves in a long towing tank. In this paper, this method is improved for the estimation of a wide range of directional response functions. The precision of the estimated directional frequency response functions are confirmed by experiments.

• Supplemental Notes:
  • Soc Naval Arch Japan J, v 169, June 1992, p 177 [9 p, 9 ref, 17 fig]
• Authors:
  • Takezawa, S
  • Hirayama, T
• Publication Date: 1992

Language

• Japanese

Subject/Index Terms

• TRT Terms: Electromagnetic spectrum; Offshore structures; Structural analysis; Structural mechanics; Transfer functions
• Uncontrolled Terms: Structural response
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00702839
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM