Improvised Model for Estimation of Cable Bending Stiffness Under Various Slip Regimes

Title

Improvised Model for Estimation of Cable Bending Stiffness Under Various Slip Regimes

Creator

Dulabhai H.P.; Parthasarthy N.S.; Hebbar G.S.

Description

It is well known that the bending response of a stranded cable varies between two extremes, known as a monolithic stickslip state and a completely frictionless loose wire state. While the monolithic state offers the maximum stiffness for the cable, the latter loose wire assembly results in minimum stiffness. The estimation of the actual behavior of the cable under any loading scenario demands a proper modeling that accounts for the interaction of the constituent wires in the intermittent slip stages. During loading, the wires are not only subjected to forces along their axes but are considerably acted upon with radial forces that cause clenching effect. Major research works have focused on the frictional resistance of these radial forces from the Coulomb hypothesis, which contributes to the macro slip phenomenon. As the effect of these radial clenching forces are also significant in causing high contact stresses between wires at the adjacent layers, the need for considering the micro slip at these locations is also vital in the evaluation of the net cable stiffness. In this paper, a novel model is proposed that considers the slip caused by the Coulomb friction hypothesis and the micro slip caused by the Hertzian contact friction for the evaluation of bending stiffness. The variation of the bending stiffness has been evaluated for a single-layered cable as a function of bending curvature at various locations by studying their slip regimes. The predicted results are compared with the published results to establish the refined combined slip hypothesis suggested in this paper. The suggested slip model in this paper has also been accounted with the improvised kinematic relations that consider the wire stretch effect, a parameter that has been neglected in this cable research till date. 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Source

Lecture Notes in Mechanical Engineering, pp. 389-402.

Date

2023-01-01

Publisher

Springer Science and Business Media Deutschland GmbH

Subject

Bending stiffness; Coulomb friction force; Hertzian contact theory; Interwire slippage; Stranded cables

Coverage

Dulabhai H.P., CHRIST (Deemed to be University), Bangalore, 560074, India; Parthasarthy N.S., CHRIST (Deemed to be University), Bangalore, 560074, India; Hebbar G.S., CHRIST (Deemed to be University), Bangalore, 560074, India

Rights

Restricted Access

Relation

ISSN: 21954356; ISBN: 978-981194207-5

Format

Online

Language

English

Type

Conference paper

Identifier

https://doi.org/10.1007/978-981-19-4208-2_28

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