A CFD-FEM based partitioned fluid structure interaction model to investigate surface cracks in elastohydrodynamic lubricated line contacts

Singh, Kunwarjeet; Sadeghi, Farshid; Peterson, Wyatt; Lorenz, Steven J; Villarreal, Jaret; Jinmon, Takumi

doi:10.1016/j.triboint.2022.107532

Cited by 15 publications

(10 citation statements)

References 42 publications

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“…The thermal conductivity of the solids in the present work is set at 𝑘 𝑠 = 47 W/mK, which has been taken from similar studies [18,53,54,77] for steel in annealed condition. For hardened steel, the thermal conductivity is significantly lower.…”

Section: Resultsmentioning

confidence: 99%

A quantitative analysis of double-sided surface waviness on TEHL line contacts

Havaej

Degroote

Fauconnier

2023

Tribology International

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Section: Resultsmentioning

confidence: 99%

A quantitative analysis of double-sided surface waviness on TEHL line contacts

Havaej

Degroote

Fauconnier

2023

Tribology International

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“…One of the aims of describing the electrical properties of rolling element bearings is to identify damage mechanisms. Work done by Almqvist et al [32] and Singh et al [20] already presented the influence of surface damages on the EHL state. Pausch [34], on the other side, was able to show that different changes in topography can influence the EHL state positively.…”

Section: Discussionmentioning

confidence: 99%

“…Numerical models of the elastohydrodynamic lubrication (EHL) contact, however, are not bound to such simplifications. Work by Almqvist [18], Neu [19] or Singh [20] has already been able to overcome this limit of ideal contact surfaces. Although the duration of a numerical calculation is several orders of magnitude longer than that of analytical and semi-analytical models, the advantage of higher accuracy and more versatile boundary conditions becomes increasingly usable with increasing computing power.…”

Section: Analytical and Numerical Modelsmentioning

confidence: 99%

“…However, this can only be used to represent changes in the contact partners along the gap height. Numerical computational fluid dynamics (CFD) models, on the other hand, overcome this disadvantage, see [20]. Thus, numerical models can be used to investigate, for example, the influence of pittings and their initiation cracks.…”

Section: Analytical and Numerical Modelsmentioning

confidence: 99%

“…According to Hertzian theory, the contact between two curved bodies is modelled as an equivalent contact consisting of a body with the reduced radius R r and a flat counter body. The reduced radius of 10 mm established in the literature [18,20,25,26] would correspond, for example, to the contact of a cylinder of R Cylinder = 6 mm and an inner ring raceway of R Raceway = 15 mm radius. Transferred to real cylindrical bearings, it is noticeable that this ratio is not common.…”

Section: Reference and Modified Casementioning

confidence: 99%

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Pitting Influence on Electrical Capacitance in EHL Rolling Contacts

Zaiat

Ibrahim

Kirchner

2023

Preprint

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This work presents an investigation on the influence of pitting in EHL rolling contact. The pit-ting geometry comes as an extension on the architecture for multi-physical numerical calculations ofrolling element bearing contacts based on OpenFOAM. The model utilized is built according to thestate-of-the-art for fluid-solid interaction and electro-quasi-static fields. In this framework, the con-tact is reduced to be two dimensional in order to reduce the computing costs needed. The changesin the electric properties, that are caused by pittings, are measured using the electric capacitanceof the contact and put in perspective to the EHL contacts geometry. The investigation deliversan evaluation on how surface degradation, in both the pitting width w and pitting depth d ofthe contact, affects the electric properties. It can be seen that the electrical capacitance changeof different initial geometries has different gradients; both in terms of absolute pitting geometrieslike pitting width w and pitting depth d and relative compared to the reduced radius w/Rr.

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