Elastic-plastic modeling of metallic strands and wire ropes under axial tension and torsion loads

•An analytical model characterizing elastic-plastic behavior is proposed for strands and ropes, especially for multi-strands structures.•The contact status within multilayered strands is carefully studied.•The different yielding and failure behaviors of wire strands under varying loading conditions...

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Veröffentlicht in:International journal of solids and structures 2017-12, Vol.129, p.103-118
Hauptverfasser: Xiang, L., Wang, H.Y., Chen, Y., Guan, Y.J., Dai, L.H.
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container_end_page 118
container_issue
container_start_page 103
container_title International journal of solids and structures
container_volume 129
creator Xiang, L.
Wang, H.Y.
Chen, Y.
Guan, Y.J.
Dai, L.H.
description •An analytical model characterizing elastic-plastic behavior is proposed for strands and ropes, especially for multi-strands structures.•The contact status within multilayered strands is carefully studied.•The different yielding and failure behaviors of wire strands under varying loading conditions are analyzed. Elastic-plastic response is greatly involved in the failure of wire ropes. Based on the derivation of the local deformation parameters of individual wire, an analytical model characterizing the elastic-plastic behavior for both wire strands and multi-strand ropes is developed in this paper. Also, the contact status within a multilayered strand is carefully studied to achieve a full understanding of wire stresses. Details of the surface strain fields of ropes are captured by 3D digital image correlation (3D-DIC) technique and the results agree well with the prediction of the present model. Varying loading conditions are considered to analyze the yielding and failure behavior of wire strands. It is found that the rotation of ropes (no matter its positive or negative) will increase the overall stress level over the wire cross section, however, restraining the rope ends leads to higher contact stress. Increasing the helix angle moderately may be an effective method to reduce the contact pressure of strand wires. Our model provides straightforward prediction of the elastic-plastic response of wire ropes and proves an effective tool for rope design due to a great reduction of time consuming in numerical simulations.
doi_str_mv 10.1016/j.ijsolstr.2017.09.008
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Increasing the helix angle moderately may be an effective method to reduce the contact pressure of strand wires. 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subjects Axial stress
Cables
Computer simulation
Contact angle
Contact pressure
Contact stresses
Deformation
Digital imaging
Elastic deformation
Elastic-plastic behavior
Elastoplasticity
Failure analysis
Local strain measurement
Mathematical models
Multi-strand rope
Rope
Rotating matter
Simulation
Straight strand
Strands
Stress state
Wire
Wire contact
Yielding and failure
title Elastic-plastic modeling of metallic strands and wire ropes under axial tension and torsion loads
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