Discussion: “Cable Kink Analysis: Cable Loop Stability Under Tension” (Yabuta, T., Yoshiziwa, N., and Kojima, N., 1982, ASME J. Appl. Mech., 49, pp. 584–588)

Abstract

paper on cable kink analysis [1] presents an interesting analysis of the stability of looped cables. However, this paper does not do full justice to the fundamental rod or cable property affecting kinking which was first discovered by A. G. Greenhill in 1883 [2]. For cables under combined tension and torsion, the instability leading to kinking occurs exactly and at times violently, when GreenhiU's condition is met, e.g., when the tension is sufficiently small compared to the twisting moment so that TL 2 / ML\*