MEASUREMENT TECHNIQUE TO OBTAIN STRUMMING CHARACTERISTICS OF MODEL MOORING CABLES IN UNIFORM CURRENTS

The David W. Taylor Naval Ship R+D Center has undertaken the development of equipment to make precise measurements of the strumming phenomena of various cables and to conduct experiments with a variety of cable models at various tensions in both uniform and non-uniform flow conditons. The equipment was fabricated and three cable models were evaluated under tension in a uniform flow. In-line and transverse displacements, static tension, static and dynamic lift, drag and tangential forces were measured. Data are presented in engineering units and non-dimensional coefficient form; time varying displacements are presented as phase spectra versus frequency. From these data, a wide variety of cable strum conditions can be compared with various analytical predictions of strumming effects and improvement in the development of analytical models can be made. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Pattison, J H
• Publication Date: 1977-4

Media Info

• Pagination: 89 p.

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Cables; Hydrodynamics; Loads; Mathematical models; Measurement; Mooring cables; Moorings; Ocean currents; Offshore moorings; Offshore structures; Tension
• Uncontrolled Terms: Models
• Old TRIS Terms: Cable hydrodynamics; Deep water; Strumming
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00166021
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-766-01
• Files: TRIS
• Created Date: Sep 20 1977 12:00AM