Dynamics of Undersea Cables.

Abstract

Mathematical models have been used for some time to predict the deformation of undersea cables due to ocean currents; however, there have been very few measurements made that permit verification of model results against observations of cable deformation. A dynamic model and a static model have been used to make calculations of shape for an experimental acoustic array deploy in the North Atlantic Ocean. The calculations were then compared to careful measurement of the shape of the array, which was a cable 6 km long suspended several kilometers above the sea floor. Both models are in qualitative agreement with observation, but they underestimate the magnitude of the maximum deformation by a factor of about 2. This underestimation has been observed before and is commonly attributed to neglect of strumming in the models. Several methods are tried to introduce strumming effects in models, but none are wholly successful. Static models do not fit the experimental data as well as the dynamic model. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 17, 1981
Accession Number
ADA099781

Entities

People

  • James Marvin Syck

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Buoyancy
  • Computational Science
  • Computer Programs
  • Coordinate Systems
  • Data Sets
  • Differential Equations
  • Dynamic Response
  • Elastic Properties
  • Equations
  • Equations Of Motion
  • Experimental Data
  • Frequency
  • Geometry
  • Measurement
  • Ocean Currents
  • Resonant Frequency
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Structural Dynamics.