A DYNAMIC ANALYSIS OF MOORED AND FREE-FLOATING CABLE SYSTEMS

This paper summarizes the results of a study and modeling of the dynamic behavior of cable-mass systems suspended in the ocean with a current profile varying linearly with depth. This study was directed toward the analysis of the dynamic displacement and tension in multicable, multipayload cable (including continuous and lumped parameter models) systems subject to wave surface excitation and depth varying current drag loading. Moored and free-floating systems are considered. The results of comparisons between model predictions and measured data indicate good correlation. Comparisons of the tension as a function of time and frequency and snap loadings were made between the lumped parameter results and experimental data. A comparison of the system tension response as a function of frequency was made with the continuous model results and experimental data. Based on model optimization and restriction considerations, The authors conclude that the models developed were applicable to moored and free-floating cable systems with long cables, but that the capabilities of the models did not include towed cable systems. Recommendations for implementing the models in a design study and recommendations for refinements in the analysis procedure are presented.

• Supplemental Notes:
  • Presented at the 1973 Offshore Technology Conference, Houston, Tex., April 30-May 2, 1973.
• Corporate Authors:

  Offshore Technology Conference

  6200 North Central Expressway
  Dallas, TX  United States  45206
• Authors:
  • McLauchlan, R A
  • Sanders, D R
  • TAYLOR, R D
  • Collier, M L
• Conference:
  • Presented at the 1973 Offshore Technology Conference, Houston, Tex., April 30-May 2, 1973.
• Publication Date: 1973-4

Media Info

• Features: References;
• Pagination: p. 185-198
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Cable systems; Cables; Dynamics; Mooring cables; Offshore moorings
• Old TRIS Terms: Cable dynamics
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00054053
• Record Type: Publication
• Source Agency: National Maritime Research Center, Galveston
• Report/Paper Numbers: OTC #1742
• Files: TRIS
• Created Date: May 7 1974 12:00AM