In-situ observation and finite element analysis of fretting fatigue crack propagation behavior in 1045 steel

Han, Qi‐Nan; Lei, Xusheng; Su, Yue; Sheng, Rui; Ma, Xianfeng; Cui, Haitao; Shi, Hui‐Ji

doi:10.1016/j.cja.2020.10.024

Cited by 8 publications

(1 citation statement)

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“…As shown in Figure 11 and Table 6, with the increase in oblique load, the damage As shown in Figure 11 and Table 6, with the increase in oblique load, the damage As shown in Figure 11 and Table 6, with the increase in oblique load, the damage initiation location moves closer to the contact center. This is consistent with the findings of Han et al's dovetail joint fretting fatigue experiments, where the crack initiation location shifted away from the loading end as the fatigue load increased [45]. Figure 12 and Table 7 indicate that a higher stiffness ratio causes the fretting damage initiation location to move toward the trailing edge of the contact.…”

Section: Damage Initiation Locationsupporting

confidence: 88%

Fretting Fatigue Behavior under Tension–Bending Mixed-Mode Loading

Zhu,

Chen

2024

Applied Sciences

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The mixed-mode loading fretting fatigue caused by the complex geometry of components and combinations of boundary conditions is a common failure mechanism in engineering components, which can dramatically reduce fatigue life. In this paper, a cylinder-on-flat numerical model was established to investigate tension–bending mixed-mode fretting fatigue. The finite element method in conjunction with two criteria, plane parameters McDiarmid (MD) and Smith–Watson–Topper (SWT), were used to evaluate the effects of mode angle, oblique loading, and stiffness ratio on the contact width, the maximum equivalent stress of the specimen, the surface stress, the fretting damage initiation location, and the extent of the damage initiation. The results indicate that the extent of fretting damage increases with the mode angle, and the characterization parameters are sensitive to smaller mode angles. The contact width, peak surface stress, maximum damage parameters, and damage initiation location can be effectively adjusted by the stiffness ratio. The findings may provide insights into fretting fatigue behavior under complex loading conditions, potentially contributing to enhanced structural safety and reliability for tension–bending mixed-mode loading.

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Section: Damage Initiation Locationsupporting

confidence: 88%