RESEARCH PAPERS: Offshore Mechanics

Helical Wire Stresses in Bent Cables

[+] Author and Article Information
R. H. Knapp

Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii

J. Offshore Mech. Arct. Eng 110(1), 55-61 (Feb 01, 1988) (7 pages) doi:10.1115/1.3257124 History: Received April 26, 1985; Revised August 06, 1987; Online October 30, 2009


An approximate theory is developed to determine the compound stress state existing in helical wires of a cable bent through a planar circular arc. Approximations arise through the treatment of the frictional interface between layers of wires. Furthermore, all materials are assumed to be linearly elastic. The model does, however, recognize geometric nonlinearities in terms of the strain-displacement relations for wire elongation and curvature. The theory presented reveals the nature of axial, bending and torsional shearing stresses produced in round helical wires. Comparisons with experimental data show reasonable agreement.

Copyright © 1988 by ASME
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