Effective Modulus of Twisted Wire Cables

by George A. Costello, (M.ASCE), Prof.; Dept. of Theoretical and Applied Mechanics, Univ. of Illinois at Urbana-Champaign, Urbana, Ill.,
James W. Phillips, Prof.; Dept. of Theoretical and Applied Mechanics, Univ. of Illinois at Urbana-Champaign, Urbana, Ill.,


Serial Information: Journal of the Engineering Mechanics Division, 1976, Vol. 102, Issue 1, Pg. 171-181


Document Type: Journal Paper

Discussion: Hegab Hassan I.A. (See full record)
Closure: (See full record)

Abstract: The axial stiffness of single-lay cables composed of an arbitrary number of smooth wires is determined analytically from the general nonlinear theory for the bending and twisting of thin helical rods. Although large changes in the helix-angle are permitted, the longitudinal strain in each wire is assumed to be small. Numerical results are presented for two cases of practical interest, namely: (1)Cables with zero end-moment; and (2) cables restrained against end-rotation. It is found that the effective stiffness is strongly dependent upon the type of end-condition, except when the initial helix angle is close to 90—.

Subject Headings: Cables | Stiffening | Arbitration | Nonlinear analysis | Bending (structural) | Rods | Strain | Numerical methods

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