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Mining Publication: A Model for the Structure of Round-Strand Wire Ropes

NOTE: This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.

Original creation date: June 2001

Image of publication A Model for the Structure of Round-Strand Wire Ropes

The behavior of wire ropes used in mine hoisting is not well understood. In an effort to improve this understanding, the structure of round-strand wire ropes was analyzed. This report provides a generalized mathematical model that completely describes the geometry of the wires. It consists of two sets of vector equations and is valid for any round-strand wire rope. One set of equations is used to traced the paths of wires that have the form of a single helix. The other is used for the paths of double helical wires. The specific model for a 33-mm 6x19 Seale, IWRC, right regular lay wire rope was presented as an example. The paths and the geometric properties of the wires which include the path length per lay of strand, the curvature, and the torsion were determined from this model. In future work, the model could be used to conduct stress analysis for the wires in the deformed rope at a given rope strain and also to study the effect of wear and breaking of wires on strength loss for the various round-strand wire ropes used in mine hoisting.

Authors: RC Wang, WM McKewan

Reference - June 2001

NIOSHTIC2 Number: 20021475

Organisation Internationale pour l'Etude de l'Endurance des Cables (OIPEEC) (International Organization for the Study of the Endurance of Ropes) Bulletin 81. Reading, U.K.: Reading Rope Research, Department of Engineering, University of Reading, 2001 Jun; :15-42