Fatigue Life Analysis of Electrical Connector Contacts Part Based on ABAQUS/FE-SAFE

Wang, Nan; Ding, Feng

doi:10.2991/pntim-19.2019.39

Cited by 2 publications

(10 citation statements)

References 7 publications

(6 reference statements)

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“…This is mainly because the insertion of the pin causes the entrance size increment of the jack reed, further resulting in the occurrences of elastic deformation and bending stress at the root of jack reed. This explanation can be directly supported by the investigation of Wang et al, which found that the largest equivalent stress is also located at the same position of the jack reed during 450 series multi‐purpose spring electrical connector insertion and extraction processes 36 . Moreover, Figure 5(B) presents the variation of σ max with the increment of the pin insertion percentage.…”

Section: Resultssupporting

confidence: 57%

“…where Δγ max denotes the shear strain amplitude, Δε n means the normal strain amplitude, σ' f is the fatigue strength coefficient, σ m is the mean normal stress, N f is the number of cycles, b is the fatigue strength index, c is the ductility index, ε' f is the fatigue extension coefficient, and C 1 and C 2 are material constants. Moreover, the above parameters can be calculated by the following equations 36 :…”

Section: Fatigue Lifementioning

confidence: 99%

“…Besides, the tangential interaction between the pin and jack is governed by the penalty friction formulation with a coefficient of 0.13. 36 Then, the fatigue life of the jack is simulated by using FE-SAFE software, due to the fact that its fatigue life is much lower than the one of the pin and directly decides the service life of the electrical connector. To estimate the fatigue properties of tin bronze, the Seeger algorithm is employed to generate its fatigue data based on the tensile strength and elastic modulus.…”

Section: Fatigue Lifementioning

confidence: 99%

“…Specifically, as the most commonly used electrical contact materials, brass and tin bronze are selected as the materials of pin and jack due to their good thermal conductivity, great electrical conductivity, as well as excellent corrosion and wear resistance. 13,36,38 The stress-strain curves of the above materials refer to literatures. 39,40 Moreover, all the displacements and rotations at the bottom of the jack are restricted.…”

Section: Fatigue Lifementioning

confidence: 99%

“…Based on the structural feature of the electrical connector, the maximum stress appears at the root of the jack reed, which can be calculated by 36

σ_{\max} = \frac{M_{\max}}{W_{z}}

M_{\max} = F_{j} L

W_{z} = \frac{I_{x}}{Q}

Q = h_{1} - (R - y)

where σ max denotes the maximum stress, M max is the maximum bending moment, W z is the bending cross section coefficient, and Q is the distance between the stress point and the neutral layer axis X l .…”

Section: Theoretical Analysismentioning

confidence: 99%

See 4 more Smart Citations

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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Section: Resultssupporting

confidence: 57%

Section: Fatigue Lifementioning

confidence: 99%

Section: Fatigue Lifementioning

confidence: 99%

Section: Fatigue Lifementioning

confidence: 99%

“…Based on the structural feature of the electrical connector, the maximum stress appears at the root of the jack reed, which can be calculated by 36

σ_{\max} = \frac{M_{\max}}{W_{z}}

M_{\max} = F_{j} L

W_{z} = \frac{I_{x}}{Q}

Q = h_{1} - (R - y)

Section: Theoretical Analysismentioning

confidence: 99%

See 3 more Smart Citations

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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show abstract

Investigation of pad radius effects on multiaxial fretting fatigue behavior of al2024 alloy

Baltach,

Taghezout,

Chaouch

et al. 2024

SEES

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Fretting fatigue, a critical phenomenon prevalent in engineering applications, occurs at the interface of contacting surfaces under cyclic loading, presenting significant challenges. The advent of Finite Element Analysis (FEA) has transformed the investigation of fretting fatigue by offering detailed insights into stress distributions and fatigue damage mechanisms. This study delves into the impact of pad radius on the fretting fatigue behavior of Al2024 alloy using FEA, with a focus on hot spot analysis and the Smith-Watson-Topper (SWT) criterion. The analysis aims to validate numerical results against analytical findings and explore the role of pad radius in determining contact behavior, fatigue life, and hot spot locations. By incorporating "fe-safe" software, computations are streamlined, facilitating efficient comparison of different fatigue initiation criteria. The results demonstrate that variations in pad radius significantly influence fretting fatigue behavior. Larger pad radii tend to distribute stresses more uniformly across the contact interface, resulting in reduced fatigue damage and longer fatigue life compared to smaller pad radii. Hot spot analysis reveals that smaller pad radii concentrate stresses at specific regions, accelerating fatigue damage initiation. The findings contribute to a deeper understanding of fretting fatigue mechanisms, shedding light on the importance of pad radius in designing more durable engineering components. Through professional scientific methodology, this study provides valuable insights into optimizing pad design to mitigate fretting fatigue and enhance the reliability of mechanical systems.

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Fatigue Life Analysis of Electrical Connector Contacts Part Based on ABAQUS/FE-SAFE

Cited by 2 publications

References 7 publications

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

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

Investigation of pad radius effects on multiaxial fretting fatigue behavior of al2024 alloy

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