Mechanical Properties of Tension-Torsion Coupling in Aluminum Conductor Steel Reinforced

ZHANG Long; HUANG Jue; ZHONG Yongli; YAN Zhitao

doi:10.3969/j.issn.0258-2724.20200076

Volume 56 Issue 4

Jul. 2021

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Journal of Southwest Jiaotong University > 2021 > 56(4): 889-896, 904.

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ZHANG Long, HUANG Jue, ZHONG Yongli, YAN Zhitao. Mechanical Properties of Tension-Torsion Coupling in Aluminum Conductor Steel Reinforced[J]. Journal of Southwest Jiaotong University, 2021, 56(4): 889-896, 904. doi: 10.3969/j.issn.0258-2724.20200076

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Mechanical Properties of Tension-Torsion Coupling in Aluminum Conductor Steel Reinforced

doi: 10.3969/j.issn.0258-2724.20200076

Received Date: 07 Mar 2020
Rev Recd Date: 23 Jul 2020

Available Online: 29 Mar 2021

Publish Date: 15 Aug 2021

Abstract

Abstract

The torsion parameter of the conductor is one of its basic mechanical properties. Moreover, the tension-torsioncoupling effect of iced transmission lines will greatly affect the accuracy of galloping analysis. To analyze this effect, the torsional test was carried out for the typical 7-strand aluminum conductor steel reinforced (ACSR) LGJ/JL/G1A-70/10, and the modeling and numerical analysis of the corresponding components are carried out by using the finite element simulation software ANSYS, the results ofwhich is compared with those calculated by the 4 theories based on the tension-torsioncoupling theory of wire rope. The results of numerical analysis are in good agreement with those of the torsion test. Thetwist factor values fluctuate greatly, which will lead to significant errors. Under the normal stress state, the conductor tension will produce a large torsion effect, and the section torsion of the conductor will also lead to a slight tension change. The tension-torsion coupling coefficient is not equal to the torsion-tension one. The theories based on steel wire rope do not consider the slip deformation and coordinate update of sub strand conductors, which overestimates the axial stiffness and the coupling effect of tension and torsion to a certain extent.
- aluminum conductor steel reinforced (ACSR),
- conductor,
- torsion,
- tension-torsion coupling,
- finite element

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References

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