Accession Number:

ADA155022

Title:

The Dynamics of Slack Marine Cables.

Descriptive Note:

Interim rept. Oct 83-Jan 85,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1985-05-13

Pagination or Media Count:

63.0

Abstract:

Cables are employed in a wide variety of marine and offshore operations. Common examples include moorings, power supply, salvage operations and umbilicals. Most of the computer models developed to date assume that the tension in the cable elements is above a threshold level such that the vibrational behavior of the cable is essentially that of a taut string. For many applications in which catenary effects are important, and umbilical applications where the cable tension may be required to be small, a significant amount of cable slack may be realized. Examples of slack cable applications include deep water moorings, horizontal cable segments between vertical legs of a cable array, the downstream vertical leg of a multiple-leg cable array, and guy lines of deep water guyed towers and semisubmersible platforms. Design analysis of cable structures such as these using conventional taut cable techniques could lead to incorrect conclusions and to inappropriate selection of the required cables. Keywords include Marine cables Slack cables Cable dynamics and Ocean engineering.

Subject Categories:

  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE