A multi-scale strategy to predict fretting-fatigue endurance of overhead conductors

Said, Julien; Garcin, S.; Fouvry, S.; Cailletaud, Georges; Yang, Christine; Hafid, Fikri

doi:10.1016/j.triboint.2019.106053

Cited by 31 publications

(16 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A previous study of the same material indicates a 65 GPa elastic modulus and a 0.35 Poisson's coefficient [3]. Thus, to reduce the computation time, these values are prescribed to the proposed model.…”

Section: Optimization Of Plastic Parameters Through Uniaxial Tensile ...mentioning

confidence: 99%

“…In order to adapt interval for inspection in maintenance program and repair protocols, damage tolerance analysis is needed to assess the remaining potential of systems involved in power lines with physical comprehension. Among all the damaging loadings that affect the total lifetime of a conductor, in contact areas between wires composing the conductor, the association of clamping force and oscillating bending movement promotes fretting fatigue [3]. Fretting loading will induce crack initiation and as soon as a microcrack exists, fatigue loading may drive the crack growth until failure [4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

Arnaud¹,

Maurel²,

Fouvry

et al. 2023

Tribology International

Self Cite

View full text Add to dashboard Cite

Section: Optimization Of Plastic Parameters Through Uniaxial Tensile ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

Arnaud¹,

Maurel²,

Fouvry

et al. 2023

Tribology International

Self Cite

View full text Add to dashboard Cite

“…The relationship between the reference point and the end face was established through coupling; the freedom of reference point 1 in six directions was limited, while the other end of the wire was free. The axial tensile displacement load was applied to the preformed armor rod end of the free end of a conductor [22]. A new reference point RP-2 was determined in the axis direction of the preformed armor rods, and the coupling connection between the new reference point and the preformed armor rod end face of the free end of the wire was established through coupling.…”

Section: ) Boundary Constraints and Load Applicationmentioning

confidence: 99%

“…In recent years, with the increase of line faults, the numerical simulation method has been used to study the stress characteristics, fatigue and wear of aluminum stranded wire. [22][23]，Liu G. et al [24] proposed a finite element modeling method of the ground wire-clamp system including armor rod and aluminum armor tape. The results shows that the method can obtain accurate calculation results.…”

Section: Introductionmentioning

confidence: 99%

Holding Force Characteristics of Preformed Helical Fitting Based on Finite Element Method

Yaguang²,

Liu

et al. 2023

IEEE Access

View full text Add to dashboard Cite

As an important part of transmission lines, preformed helical fitting plays an indispensable role in the safe and stable operation of electronic circuits. However, due to the poor service environment of transmission lines, preformed helical fitting can often slip, scatter, and detwist. This paper explores variations in the holding force of the preformed helical fitting under different geometric parameters. First, the geometric structure of preformed helical fitting is analyzed, and the secondary development is conducted using the ABAQUS finite element software. The script program is written in Python language to realize the parametric modeling. Based on the experimental results, the changing trend of the holding force is consistent, which confirms the correctness of the finite element model. In addition, the preformed helical fitting is studied under different values of molding aperture, pitch length, pitch number, and armor rod diameter, and changes in the holding force under different parameters are analyzed. The results show that the holding force of the preformed helical fitting increases with the decrease in the molding aperture and pitch length, and the molding aperture has a negative linear correlation with the overall holding force. The holding force increases linearly with the pitch number; so, reducing the pitch length can increase the holding force of preformed helical fitting. Moreover, the results indicate that the holding force increases with the armor rod diameter. The research results presented in this study have important guiding value for the design of performed helical fitting.

show abstract

“…In the literature, stranded all-aluminum cables are referred to as all-aluminum alloy conductors (AAACs) [4,7,8,[20][21][22][23][24][25][26][27] or, separately, all-aluminum conductors (AACs) if all of the wires in the cable are made of high-purity aluminum or aluminum conductor alloy-reinforced (ACAR) if the wires are made of technical-grade aluminum [28]. Stranded steel-aluminum cables are called aluminum conductors (or cable or clad) steel-reinforced (ACSR) [4][5][6][7]11,12,14,15,26,[29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Wires of the Long-Operated Aluminum-Steel Cable at Different Places on an Overhead Power Line Span

et al. 2023

View full text Add to dashboard Cite

During operation, cables of overhead power lines (OPLs) are exposed to the impact that differs in separate parts of the OPL span due to the different responses of cables near the clamps and far from them. This paper presents the results of a study of aluminum and steel wires cut from such separate parts of ACSR cables before and after exploitation. Structural, microstructural, and elastic–microplastic properties of wires and their changes during operation were studied through optical microscopy, energy-dispersive X-ray microanalysis, electron backscattering diffraction, X-ray diffraction, densitometry, and acoustic measurements. The characteristics of the properties of the wires along the span were found to change in a coordinated manner. Numerical estimates of the influence of the steel core on aging the ACSR cable were obtained. Changes in the properties of the wires, as well as oxidization and corrosion of their near-surface layers, were studied in detail. Quantitative values of the characteristics of properties, the most distant from those observed in the new wires, were revealed for samples of aluminum and steel wires cut from the cable at 1/4 span and near clamps. It is assumed that these cable parts should be the most crucial for cable durability.

show abstract

A multi-scale strategy to predict fretting-fatigue endurance of overhead conductors

Cited by 31 publications

References 27 publications

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

Fretting tests for cyclic plastic law identification: Application to a 1XXX aluminium crossed wire contact

Holding Force Characteristics of Preformed Helical Fitting Based on Finite Element Method

Characteristics of Wires of the Long-Operated Aluminum-Steel Cable at Different Places on an Overhead Power Line Span

Contact Info

Product

Resources

About