DYNAMIC IMPEDANCE ANALYSIS OF MOORING CABLES

A cable fixed to the sea bottom and connected at its upper end (or mooring point) to a floating body moving in a seaway is treated as a dynamic system. In an experiment, forces caused by the motion of the body are replaced by a step-force excitation and the transient response is noted. Equations for a generalized dynamic system are used to determine the functional relationship of excitation and response data in the form of impedance in the frequency domain. The impedance may be used as a design tool for prediction of mooring point forces. Impedance data as a function of frequency is presented along with experimental time records and data processing programs.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Ocean Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • Lincoln Jr, W B
  • Publication Date: 1975-2-10

Subject/Index Terms

Filing Info

  • Accession Number: 00099980
  • Record Type: Publication
  • Source Agency: Massachusetts Institute of Technology
  • Report/Paper Numbers: Thesis
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM