К вопросу о долговечности стальных канатов

E A Kalentiev; V V Tarasov; V N Novikov

doi:10.22213/2413-1172-2019-1-20-28

Authors

E. A. Kalentiev Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences
V. V. Tarasov Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences
V. N. Novikov Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences

DOI:

https://doi.org/10.22213/2413-1172-2019-1-20-28

Keywords:

wire rope, numerical analysis, bending, block, pulley

Abstract

The paper discusses some aspects of the assessment of the durability of steel ropes operating on blocks, taking into account the contact interaction of wires. Types of stresses arising from operation of steel ropes are described. The basic information on steel ropes testing for durability in bending is given. To determine the durability of steel ropes operating on blocks, empirical dependences are presented that take into account many factors: the actual load, the ratio of diameters of the rope and the block, the tensile strength of the wire material, the diameter of the rope, the length of the rope run on the block, the type of the core, the shape of the block groove, the type of steel rope lubricants and others. It has been shown that relative bending of steel rope elements occurs during bending of the rope on the block, leading to the appearance of fretting wear. To excite this process, displacement of surfaces with an amplitude of 0.025 μm is sufficient. The magnitude of the relative micro wire displacements in a steel cable depends primarily on the ratio of the rope diameter to the block diameter and increases exponentially with its decrease. Thus, the small diameter of the block is an unfavorable factor and its critical size can be established basing on the analysis of the solutions obtained.

Author Biographies

E. A. Kalentiev, Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences

PhD in Engineering

V. V. Tarasov, Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences

DSc in Engineering

V. N. Novikov, Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences

Post-graduate

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