Shear driven crack arrest investigation under compressive state: Prediction of fretting fatigue failure of aluminium strands

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

doi:10.1016/j.ijfatigue.2020.105589

Cited by 24 publications

(15 citation statements)

References 20 publications

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“…The same value was used in recent research works which deal with fretting fatigue tests on individual wires. 11,12 In the present study, this parameter was fixed depending on the studied alternating stress amplitudes, which are far from the endurance limit of the tested wire.…”

Section: Preliminary Fretting Fatigue Testsmentioning

confidence: 99%

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Fretting fatigue life assessment of overhead conductors using a clamp/conductor numerical model and biaxial fretting fatigue tests on individual wires

Omrani

Langlois

Dyke

et al. 2021

Fatigue Fract Eng Mat Struct

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The fatigue life of overhead conductors is usually evaluated through experimental tests on clamp/conductor assemblies. Some recent studies aim to estimate the fatigue life of conductors using uniaxial tests on individual strands. This paper presents an innovative method for assessing the fretting fatigue life of overhead conductors combining the effect of both tension and bending loadings. It consists of coupling a numerical approach based on modeling the clamp/conductor assembly using the finite element method and an experimental one based on fretting fatigue tests on individual wires. A biaxial fretting fatigue test rig has been developed and validated through preliminary tests performed on 1350-H19 aluminum wires under uniaxial and an equivalent biaxial loading. Tension and bending loadings obtained from the numerical model were then applied on individual wires. Results showed a good correspondence with existing experimental data of the fatigue tests carried on the aluminum conductor steel reinforced (ACSR) Bersfort conductor with a metal-to-metal suspension clamp.

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Section: Preliminary Fretting Fatigue Testsmentioning

confidence: 99%

“…Exploiting the data of Table 5 extracted from the globalscale model, the tension force is calculated directly from the tension component of the stress using Equation (11), where S w is the section area of the wire specimen:…”

Section: Evaluation Process Of the Local Loading Statementioning

confidence: 99%

Fretting fatigue life assessment of overhead conductors using a clamp/conductor numerical model and biaxial fretting fatigue tests on individual wires

Omrani

Langlois

Dyke

et al. 2021

Fatigue Fract Eng Mat Struct

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show abstract

“…Lalonde et al 10,11 developed a 3D finite element approach using beam elements for multi-wire aluminum overhead conductors showing two types of wire contact, namely, lateral line contact line and radial point contact. Similarly, Said et al 12 used a global-local methodology for simulation of fretting-fatigue crack progagation in multi-wire aluminum. The local 3D model was based on an elastic crossed-cylinder configuration and ignored the influence of helical shape.…”

Section: Introductionmentioning

confidence: 99%

Global and local modeling for inter‐wire fretting in multi‐wire copper conductors

Poon

Barrett

Leen

2022

Fatigue Fract Eng Mat Struct

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Submarine power cables (SPC) are vulnerable to fretting, wear, and fatigue due to the dynamic environment, particularly at end connectors and junctions or other discontinuities, such as seabed features. This paper presents a finite element methodology for global and local analysis of fretting between copper conductors in multi‐strand cables. The salient inter‐wire fretting variables, such as relative slip and contact pressure, almost impossible to measure experimentally, are identified here via the three‐dimensional, global multi‐wire model, which includes frictional contact and large deformation effects. Local 2D and 3D representative models, typical of laboratory‐scale fretting test configurations, are adopted, with fretting boundary conditions derived from the global model fretting variables, for detailed micro‐scale resolution of fretting contact. A critical‐plane, multiaxial fretting‐fatigue life methodology is implemented to quantify fretting‐fatigue life. The effects of lay angle, contact size, wire diameter, friction, and slip are investigated. It is shown that, in general, increasing lay angle, contact size, wire diameter, and friction lead to reduced life. A key novel contribution of the paper is identification of the fretting fatigue relationships between representative local 2D (Hertzian) and 3D (crossed cylinder) modeling, via matching contact pressure, and global multi‐wire contacts. A rationalization of the relative contact size effects associated with transverse‐ and longitudinal‐type contacts in such applications is also presented.

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“…Thus, to estimate the fracture life by fretting fatigue under a conforming contact configuration. Julien et al [3] studied the propagation of fretting fatigue cracks by the use of F the FEM method, to simulate and deduce the distributions of the stress intensity factor (SIF) in the length of the crack front. Thanh et al [4] proposed a new approach based on the evaluation of nucleation, and the lifetime of deterioration due to fretting fatigue, to measure the change of the central point of the power spectral density (CP -PSD).…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of the contact effect on the parameters of cracking in a 2D Fatigue Fretting Model

Bentahar¹,

Benzaama

Mahmoudi³

2021

Frattura Ed Integrità Strutturale

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The objective of this work is to study the effects of contact parameters on the cracking parameters of a specimen and a pad assembly. These parameters have been studied and evaluated by the finite element method analysis in two dimensions fretting fatigue model through the Abaqus calculation code. Different values of the coefficient of friction of 0.1, 0.3 and 0.6 were applied on the various lengths in contact for a = 0.1, 0.5 and 1mm. Thus, on the various values of angle of orientation of the crack equal to 15 °, 30 ° and 45 °. In addition, elements of the type (CPE4R) and the criterion of maximum tangential stress were applied. The curves of the crack parameters such as the SIF coefficients and the integral J were obtained and discussed.

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Shear driven crack arrest investigation under compressive state: Prediction of fretting fatigue failure of aluminium strands

Cited by 24 publications

References 20 publications

Fretting fatigue life assessment of overhead conductors using a clamp/conductor numerical model and biaxial fretting fatigue tests on individual wires

Fretting fatigue life assessment of overhead conductors using a clamp/conductor numerical model and biaxial fretting fatigue tests on individual wires

Global and local modeling for inter‐wire fretting in multi‐wire copper conductors

Numerical modeling of the contact effect on the parameters of cracking in a 2D Fatigue Fretting Model

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