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Model for the structure of round-strand wire ropes.

Authors
Wang-RC; Miscoe-AJ; McKewan-WM
Source
NIOSH 1998 Sep; :1-19
NIOSHTIC No.
20000227
Abstract
The behavior of wire ropes used in 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 trace 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, independent wire rope core (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. The effects of strain deformation were analyzed, resulting in a system of equations for determining the structural parameters of the deformed rope. In future work, the model could be used to analyze wire ropes of different constructions so that a more scientifically based understanding of rope behavior can be established.
Keywords
Rope-safety; Wire-rope; Mathematical-models; Safety-research; Mechanical-properties; Engineering; Hoisting-equipment; Mining-equipment; Mining-industry; Structural-analysis; Wear-resistance
Publication Date
19980901
Document Type
Numbered Publication; Report of Investigations
Fiscal Year
1998
NTIS Accession No.
PB2004-104820
NTIS Price
A04
Identifying No.
(NIOSH) 98-148; RI-9644
ISSN
1066-5552
NIOSH Division
PRL
Source Name
National Institute for Occupational Safety and Health
State
PA
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