An all-in-one numerical methodology for fretting wear and fatigue life assessment

Llavori, Iñigo; Urchegui, M.A.; Tato, Wilson; Gómez, X.

doi:10.3221/igf-esis.37.12

Cited by 3 publications

(2 citation statements)

References 12 publications

(26 reference statements)

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“…The fretting phenomenon occurs when two objects in contact are exposed to low-amplitude relative motion that causes damage to the contact surface. Depending on the scale of stresses, fretting may cause catastrophic damage of these parts (Llavori, 2016). Waterhouse R.B.…”

Section: Wheel-axle Interference Joint Wearmentioning

confidence: 99%

Fretting Wear as an Example of Destruction of Railway Vehicles Wheelsets

Dębiński

Brezáni

2018

New Trends in Production Engineering

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The article refers to the importance of the aspect of durability and reliability of wheelsets. It contains a short analysis of railway accidents in which the causes were failures of wheelsets. The paper lists most common faults occurring in the course of the wheelsets operation. The major problem of the paper were laboratory analyses of fretting wear developing in interference joints. The research has been conducted using a wheelset comprising a shaft and a sleeve. Fatigue tests in conditions close to the wheelset operating environment have been conducted. The laboratory analyses included macroscopic observation that indicated fretting wear signs on both sides of the wheel seat in form of a 3.5 mm wide ring around the entire perimeter. The following procedures included microscopic observations in the wear signs area, that indicated numerous material accumulations exposed to plastic deformation and oxidation.

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Section: Wheel-axle Interference Joint Wearmentioning

confidence: 99%

Fretting Wear as an Example of Destruction of Railway Vehicles Wheelsets

Dębiński

Brezáni

2018

New Trends in Production Engineering

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“…Recently, attention has been paid to the coupling mechanism of fatigue and wear during repeated contact. Garcin et al [35] and Llavori et al [36] simulated the evolution process of fretting damage by using finite element analysis and analytical calculation, respectively. Based on the CDM theory, Leonard et al [37], Ghosh et al [38], and Shen et al [39] simulated the combined process of fretting wear and fatigue damage and discussed the effects of the surface roughness, frictional coefficient, material hardness, and Youngʹs modulus on fretting wear.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the fatigue-wear coupling mechanism of an aviation gear

et al. 2020

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The contact fatigue of aviation gears has become more prominent with greater demands for heavy-duty and high-power density gears. Meanwhile, the coexistence of tooth contact fatigue damage and tooth profile wear leads to a complicated competitive mechanism between surface-initiated failure and subsurface-initiated contact fatigue failures. To address this issue, a fatigue-wear coupling model of an aviation gear pair was developed based on the elastic-plastic finite element method. The tooth profile surface roughness was considered, and its evolution during repeated meshing was simulated using the Archard wear formula. The fatigue damage accumulation of material points on and underneath the contact surface was captured using the Brown-Miller-Morrow multiaxial fatigue criterion. The elastic-plastic constitutive behavior of damaged material points was updated by incorporating the damage variable. Variations in the wear depth and fatigue damage around the pitch point are described, and the effect of surface roughness on the fatigue life is addressed. The results reveal that whether fatigue failure occurs initially on the surface or sub-surface depends on the level of surface roughness. Mild wear on the asperity level alleviates the local stress concentration and leads to a longer surface fatigue life compared with the result without wear.

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Fretting: Review on the Numerical Simulation and Modeling of Wear, Fatigue and Fracture

Llavori¹,

Esnaola²,

Zabala³

et al. 2018

Contact and Fracture Mechanics

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This chapter presents a general background and the state of the art of numerical simulation and modeling of fretting phenomenon in terms of wear, fatigue and fracture. First, an introduction of fretting and its implications is exposed. Second, different methodologies for wear modeling and simulation are described and discussed. Afterwards, fatigue and fracture analysis approaches are revised. To that end, multiaxial fatigue parameters are introduced putting an emphasis on the physical basis of the fretting phenomena and the suitability of each model. On the other hand, the propagation phase based on linear elastic fracture mechanics (LEFM) via the finite element method (FEM) and the eXtended finite element method (X-FEM) analysis methods is presented and compared. Finally, different approaches and latest developments for fretting fatigue lifetime prediction are presented and discussed.

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An all-in-one numerical methodology for fretting wear and fatigue life assessment

Cited by 3 publications

References 12 publications

Fretting Wear as an Example of Destruction of Railway Vehicles Wheelsets

Fretting Wear as an Example of Destruction of Railway Vehicles Wheelsets

Simulation of the fatigue-wear coupling mechanism of an aviation gear

Fretting: Review on the Numerical Simulation and Modeling of Wear, Fatigue and Fracture

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