EXPERIMENTAL ANALYSIS OF STRESSES IN A BUOY-CABLE SYSTEM USING A BIREFRINGENT FLUID

An extension of the method of photoviscous analysis is presented which permits quantitative studies of strains associated with steady state vibrations of immersed structures. Strains can be determined both in the vibrating structure and in the surrounding fluid. The method is applied in an investigation of one form of behavior of buoy-cable systems loaded by the action of surface waves. Procedures are illustrated for evaluating directly from the strain data parameters useful to the buoy-cable system designer. The analysis performed is two-dimensional. The cable is modeled by a soft rubber strip, and the buoy by a round can floating on the surface of a birefringent fluid. A payload is simulated by a weight attached to the lower end of the strip. Waves of controllable frequency are produced by a device actuated by a shaker. Strains in the fluid and in the strip are determined from isochromatic and isoclinic data and the possible extension of the experimental results obtained to prototypes by means of scaling laws is suggested.

• Corporate Authors:

  Catholic University of America

  Department of Civil and Mechanical Engineering
  Washington, DC  United States  20017
• Authors:
  • Durelli, A J
  • Clark, J A
• Publication Date: 1971-2

Media Info

• Features: Figures; References;
• Pagination: 22 p.
• Serial:
  • Issue Number: 26

Subject/Index Terms

• TRT Terms: Buoys; Cable systems; Cables; Hydrodynamics; Stresses; Waves
• Old TRIS Terms: Buoy hydrodynamics; Vibrating cables; Wave induced stresses
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00016714
• Record Type: Publication
• Report/Paper Numbers: Themis 893 (1968-71)
• Contract Numbers: N00014-67-A-03770011
• Files: TRIS
• Created Date: Oct 29 1971 12:00AM