THE ANCHOR-LAST DEPLOYMENT PROBLEM FOR INEXTENSIBLE MOORING LINE

A lumped mass numerical model was developed which predicts the dynamic response of an inextensible mooring line during anchor-last deployment. The mooring line was modeled as a series of concentrated masses connected by massless inextensible links. A set of angles was used for displacement coordinates, and Lagrange's Method was used to derive the equations of motion. The resulting formulation exhibited inertia coupling, which, for the predictor-corrector integration scheme used, required the solution of a set of linear simultaneous equations to determine the acceleration of each lumped mass. For the selected cases studied the results show that the maximum tension in the cable during deployment will not exceed twice the weight of the cable and anchor in water.

• Supplemental Notes:
  • Contributed by the Ocean Technology Division of ASME. Also published in ASME Transactions of Engineering for Industry.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Rupe, R C
  • Thresher, R W
• Publication Date: 1974-7

Media Info

• Features: Appendices; References;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Dynamic loads; Metric system; Mooring; Mooring cables
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00072635
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 74-WA/OCT-5
• Files: TRIS
• Created Date: Dec 19 1974 12:00AM