A New Fatigue Life Model for Rolling Bearings

Ιωαννίδης, Ε.; Harris, T. A.

doi:10.1115/1.3261081

Cited by 385 publications

(187 citation statements)

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“…This is then used in conjunction with a contact fatigue life model. The Ioannides and Harris [23] model has proved particularly useful because in this approach the fatigue failure probability is presented as an integral of a sub-surface stress amplitude field [22].…”

Section: Modelling Fatigue Life Of Dented Surfacesmentioning

confidence: 99%

The Life Cycle of a Debris Particle

Dwyer-Joyce

2005

Tribology and Interface Engineering Series

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Debris particles exist in most lubrication systems; they are frequently responsible for the early failure of tribological machine elements. Particles come from the surrounding environment, or may be generated within the machine components. As the lubricant circulates, these particles get flushed into the machine elements. Contact pressures are high and oil films are small, so that the relatively large particles damage even the hardest gear, bearing, or cam surface. This damage can lead to contact fatigue or wear, and thus premature failure of the whole machine. Further, one failure can result in the generation of further wear debris, often in very great quantities, that then can have a knock-on effect in other parts of the lubricated system. This paper gives an overview of important features of the life cycle of a debris particle; entrainment of debris particles into a contact, resulting surface damage, shortened component life, and debris particle procreation by fatigue and wear. The debris life cycle coincides with the early mortality of the machine element. The methods by which component life, under particulate contaminated conditions, can be determined are reviewed.

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Section: Modelling Fatigue Life Of Dented Surfacesmentioning

confidence: 99%

The Life Cycle of a Debris Particle

Dwyer-Joyce

2005

Tribology and Interface Engineering Series

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“…As a development of bearing life methodology, Ioannides and Harris [9] proposed a fatigue strength approach, similar to that in structural fatigue. Thus a fatigue limit was introduced according to the following equation by means of a shear stress fatigue limit .…”

Section: (B) Fatigue Limit Approachmentioning

confidence: 99%

Fatigue tolerant design of rolling bearings

Gill

Lewis²

2015

Proceedings of the Institution of Mechanical Engineers, Part J:

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A quantitative method for assessing the influence of steel cleanliness on the fatigue life of rolling bearing raceways is presented. The approach systematically accounts for the effect of the highly variable stress state within raceways. Finite element analysis is used to determine the stress state in the bearings. A fracture mechanics model for the safe stress amplitude as a function of inclusion size is employed from Lewis and Tomkins, J Engng Tribology, 226 (5) 389 (2012). The size and number of large inclusions in a large volume of steel are estimated by the Generalised Pareto Distribution. These three elements are combined to determine the failure probability of the raceway in an example rolling bearing. A sensitivity analysis to the various microstructural input parameters is conducted. It is found that the size distribution of the larger inclusions is the most important factor in controlling the fatigue resistance of rolling bearings, and that residual stresses must be considered to produce realistic predictions.

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“…[15] the reciprocal of the first term (at the right side of the equation) corresponds to the original Lundberg-Palmgren (1) model (basic rating) modified with the additional effect of the fatigue limit (L v ) as introduced in Ioannides and Harris (11), and the reciprocal of the second term (at the right side of the equation) corresponds to any additional effect introduced by damage accumulation at the surface of the rolling contact (L s ). From [14] it is possible also to derive an expression of the rolling contact life,…”

Section: Model Behaviormentioning

confidence: 99%

“…[11] for the subsurface and [12] for the surface. As a simple indication, consider maximum values of the stress amplitudes.…”

Section: Surface Model Behaviormentioning

confidence: 99%

A Model for Rolling Bearing Life with Surface and Subsurface Survival—Tribological Effects

Morales-Espejel¹,

Gabelli²,

Vries³

2015

Tribology Transactions

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International audienceUntil now the estimation of rolling bearing life has been based on engineering models that consider an equivalent stress, originated beneath the contact surface, that is applied to the stressed volume of the rolling contact. Through the years, fatigue surface–originated failures, resulting from reduced lubrication or contamination, have been incorporated into the estimation of the bearing life by applying a penalty to the overall equivalent stress of the rolling contact. Due to this simplification, the accounting of some specific failure modes originated directly at the surface of the rolling contact can be challenging. In the present article, this issue is addressed by developing a general approach for rolling contact life in which the surface-originated damage is explicitly formulated into the basic fatigue equations of the rolling contact. This is achieved by introducing a function to describe surface-originated failures and coupling it with the traditional subsurface-originated fatigue risk of the rolling contact. The article presents the fundamental theory of the new model and its general behavior. The ability of the present general method to provide an account for the surface–subsurface competing fatigue mechanisms taking place in rolling bearings is discussed with reference to endurance testing data

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A New Fatigue Life Model for Rolling Bearings

Cited by 385 publications

References 0 publications

The Life Cycle of a Debris Particle

The Life Cycle of a Debris Particle

Fatigue tolerant design of rolling bearings

A Model for Rolling Bearing Life with Surface and Subsurface Survival—Tribological Effects

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