Accession Number : ADA017699

Title :   Kink Formation and Rotational Response of Single and Multistrand Electromechanical Cables.

Descriptive Note : Final rept Jul 73-Jun 74,


Personal Author(s) : Liu,F. C.

Report Date : OCT 1975

Pagination or Media Count : 42

Abstract : Mathematical models for double-armored and multistrand cables were formulated to simulate straight cable sections. Numerical solutions for free-end and fixed-end cables under tension were obtained with a computer. Controlled cable tests were conducted to generate data on the rotational behavior of six cables of different size and construction. Part of the data was used to compare with results from the analytical models. Experimental results and model predictions for elongation and rotation were in good agreement for the case of a double-armored cable. Experimental and predicted values of rotation for a 3 x 19 nonrotating, multistrand cable were not in good agreement, apparently because of the difficulty in modeling the complex construction of the cable. Two types of cables were subjected to constant tension and were twisted until kinks developed. These test results show that the buckling criterion for a solid rod can be used as a criterion for kinking of double-armored and multistrand cables. (Author)

Descriptors :   *Electric cables, *Mechanical cables, *Underwater equipment, Wire rope, Stress analysis, Rotation, Loops, Test methods, Mathematical models, Digital computers, Tension, Torsion

Subject Categories : Electrical and Electronic Equipment
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE