Probing the effect of the electric current on the tribological performances of the electrical contact surfaces with graphene coating

Wang, D.W.; Li, F.Q.; Chen, X.; Xiang, Z.Y.; Zhao, Feihu

doi:10.1016/j.triboint.2022.108121

Cited by 13 publications

(4 citation statements)

References 37 publications

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Section: ■ Materials and Methodsmentioning

confidence: 99%

“…Open-source LAMMPS implemented MD simulations to probe the effect of silica particles of different radii on the friction and wear behavior of the pair between Fe block and DLC film in the water environment. , The simulation process can be divided into three stages: (1) film preparation, (2) applying load, and (3) sliding Fe block. The melting-quenching process prepares the film, and the specific preparation process can be referred to the previous studies. , The system needs to be energy minimized before applying the load, using the steepest descent method, with an energy tolerance of 1.0 × 10 –15 kcal/mol, a force tolerance of 1.0 × 10 –15 kcal/(mol × nm), and a maximum number of iterations of 5000 as the iteration termination criteria .…”

Section: Methodsmentioning

confidence: 99%

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Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Zhu,

Wang,

Liu

et al. 2023

Langmuir

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Cuttings particles of different sizes in the drilling fluid are the leading cause of wear at the casing and drill pipe joints, and diamond-like carbon (DLC) films have excellent research potential in reducing tool wear due to their ultra-low friction coefficient and high wear resistance. In this paper, a corresponding molecular dynamics model was developed using LAMMPS to investigate the effect of silica particles of different particle sizes on the friction and wear mechanisms of Fe/DLC friction pairs at the microscale. The results show that small cuttings particles in a dry environment are more likely to cause interface wear between the casing and drill pipe joint, while in a water environment, the opposite is true. The main reason is that small particles in a dry environment have smaller contact areas and greater indentation depth, leading to greater wear at the friction interface. The movement of water molecules in the water environment will promote the composite movement of large particles, thereby exacerbating the wear of the interface. Moreover, the relevant research results at the micro-scale indicate that DLC films can effectively reduce wear, which provides theoretical support for its application in drill pipe joints.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Zhu,

Wang,

Liu

et al. 2023

Langmuir

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“…The test rig can simultaneously measure the COF, contact force, vibration acceleration and voltage signals during the friction process. More detailed description of the test rig can be found in [41].…”

Section: Test Rigmentioning

confidence: 99%

Effect of surface texture on the tribological behavior of sliding electrical contact interface

Wang

Chen

et al. 2023

Surf. Topogr.: Metrol. Prop.

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Two kinds of textured surfaces, i.e. square pit-textured surface (SPTS) and round pit-textured surface (RPTS), are manufactured on the flat specimen surface, respectively. A series of current-carrying tests are carried out to detect the ability of surface texture in affecting the tribological behaviors. Results show that the friction coefficient and friction force of RPTS is the lowest among all the surfaces. Moreover, the RPTS shows the best potential in suppressing the generation of friction-induced vibration (FIV). Although the contact resistance of RPTS is slightly larger than that of other surfaces, the continuity of electrical contact is acceptable. Worn surface analysis is performed to illustrate the different tribological performances of these surfaces. Finite element analysis is also performed to provide reasonable explanation for the test phenomenon.

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“…Electrical connectors, as the carriers of signal and power between electronic equipment, are widely used in aerospace, industrial robots, electronic communications, etc 1–3 . According to previous studies, the reliability of electrical connectors is mainly influenced by their mechanical behavior and fatigue life, which directly affect the working performance of the whole equipment system 4–6 . Therefore, it is of vital importance to investigate the distribution and evolution characteristics of contact forces, stress, and fatigue life within electrical connectors.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on mechanical and fatigue behaviors of aviation electrical connector considering structural effect

Luo,

Wang,

Jiang

et al. 2023

Int J Numerical Modelling

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This work is motivated by the fact that the reliability of electrical connectors influenced by their mechanical behavior and fatigue life directly affects the working performance of the whole equipment system. In this paper, theoretical analyses of insertion force, maximum stress, and fatigue life in an aviation electrical connector are presented and the corresponding mathematical models are firstly derived. Then, to numerically investigate its mechanical behavior and fatigue life, a simplified 3D FE model is developed by using ABAQUS and FE‐SAFE software and verified by experiments and theoretical analysis. Finally, the distribution and evolution characteristics of contact forces, stress and fatigue life considering the influences of reed thickness and slot width are quantitatively analyzed in details. The results indicate that the insertion force first increases and then stabilizes at the level of 0.16 N as the pin head is fully inserted into the jack, which shows an opposite to the evolution of extraction force. Moreover, the maximum value of stress and the minimum value of fatigue life are all located at the root of the jack reed. Besides, unlike the small effect of slot width, the Fimax and σmax values obviously increase and the Nf value decreases with the increment of reed thickness.

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Probing the effect of the electric current on the tribological performances of the electrical contact surfaces with graphene coating

Cited by 13 publications

References 37 publications

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Probing the Effect of Cuttings Particle Size on the Friction and Wear Mechanism at the Casing Friction Interface: A Molecular Dynamics Study

Effect of surface texture on the tribological behavior of sliding electrical contact interface

Numerical analysis on mechanical and fatigue behaviors of aviation electrical connector considering structural effect

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