Study of Modified Fatigue Life of Cylindrical Roller Bearing Under Lubrication Regime

Soares, Aline de Almeida; Tsuha, Natália Akemi Hoshikawa; Dedini, Kátia Lucchesi Cavalca

doi:10.26678/abcm.cobem2019.cob2019-0406

Cited by 1 publication

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“…8 In Liu et al 9 discusses the relevance of lubricant film given the load parameters and influence of the average surface roughness on the shear stress present on the contact. A comparison between the calculation of fatigue life with dry contact and lubricated contact was presented in Soares et al 10 Numerical simulation showed that the presence of lubrication allows longer bearing life when the contacts are lubricated. The Weibull model methodology, 11 proposed a coefficient correction for the expression of fatigue life considering the average surface roughness in the contact between the rolling element and raceway.…”

Section: Introductionmentioning

confidence: 99%

Optimized selection of fluid lubricant for cylindrical roller bearings under elastohydrodynamic lubrication

Soares

Tsuha

Cavalca

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Roller bearings are widely used in machinery. Keeping the contact surfaces of bearings properly lubricated strongly mitigates wear effects, improving bearing fatigue life. Therefore, systematically selecting the lubricant fluid that satisfies bearing operation conditions allows the lubricating layer to be able to carry the applied load, the operating temperature, and the roughness on contact. The nonlinear constrained optimization method is used for lubricant selection, seeking to find the fluid that best fits the bearing operation conditions. Roller bearing lubrication is characteristically elastohydrodynamic (EHL); namely, the Hertz theory describes the load applied on the contacts of a cylindrical roller bearing, and the Stribeck condition classifies the tribological condition of the surfaces in contact. This work concludes that roughness and speed are the most important parameters to consider when choosing a fluid lubricant.

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