Running-in of plain bearings

Rowe, G. W.; Kaliszer, H.; Trmal, G. J.; Cotter, A.

doi:10.1016/0043-1648(75)90303-8

Cited by 25 publications

(13 citation statements)

References 7 publications

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“…It can be clearly seen that the variation of the surface roughness of the softer material does not influence the wear particles size, whereas the change in the topography of the harder surface produces a clear effect. This behavior was also observed experimentally [57].…”

Section: Influence Of Surface Roughness On Wear Particles Sizesupporting

confidence: 70%

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

2016

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In this paper, the formulation and validation of a model for the prediction of the wear particles size in boundary lubrication is described. An efficient numerical model based on a well-established BEM formulation combined with a mechanical wear criterion was applied. The behavior of the model and particularly the influence of the initial surface roughness and load was explored. The model was validated using measurements of the wear particles formed in steel-steel and steel-brass contacts. In the case of steel-steel contact, a reasonable quantitative agreement was observed. In the case of steel-brass contact, formation of the brass transfer layer dominates the particles generation process. To include this effect, a layered material model was introduced.

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Section: Influence Of Surface Roughness On Wear Particles Sizesupporting

confidence: 70%

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

2016

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“…The wear volume increases strongly in the beginning and flattens out over time. 2 A steady state of wear was not identified during the investigated time, as the wear volume does not change linearly with time or sliding distance [26]. Rather a steady state of operation is achieved without continuing wear (see discussion in Section 7.2).…”

Section: Simulation Resultsmentioning

confidence: 99%

“…These impacts affect the surface shape, the radial clearance and surface roughness. Older publications on this topic [2][3][4][5] highlighted through experiments that the shell roughness gets smoother during the running-in process especially in the very beginning. Another result implied that the final shell roughness of the worn region was similar to the harder journal roughness.…”

Section: Introductionmentioning

confidence: 97%

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Edge loading and running-in wear in dynamically loaded journal bearings

Sander

Allmaier

Priebsch

et al. 2015

Tribology International

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“…With regard to the topographic alterations during running-in there are several points of view: Archard [19] suggests that a new surface would undergo plastic deformation of asperities at the outset but would run-in so that the asperities are only found at the limit of elastic deformation. Rowe and co-workers [20,21] discovered that the initial topography has a dominant effect on the final roughness of the surface and on the final coefficient of friction. Kragelsky and Kombalov [22] has shown that surface roughness has a steady value during running-in and that this state corresponds to a minimum coefficient of friction the transition from the hydrodynamic to mixed lubrication.…”

Section: Surface Damagementioning

confidence: 99%

An experimental model for mixed friction during running-in

Nogueira

Dias

Gras

et al. 2002

Wear

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Mechanical engineering often uses fluid lubrication to limit friction. Even in the presence of a lubricant, metallic contact between the sliding surfaces may readily occur. In running-in, the oil film thickness can be so thin that contact arises at the summit of asperities, thus, increasing both the friction coefficient and wear. Such regimes are the so-called mixed or boundary lubrication. In these situations, the friction coefficient varies continuously and it is therefore, necessary to calculate the friction coefficient at any given moment.Given two rough parallel surfaces in a lubricated environment, a model is herein proposed whereby the friction coefficient is controlled by a single hydrodynamic parameter. This experimental analysis seeks to take into account a wide variety of factors influencing the conditions in which the contact operates: functional parameters (normal load, sliding speed, viscosity), the contact pair's mechanical properties (elastic modulus, Poisson's ratio) and surface microgeometry (as expressed by the standardised roughness parameters). This extended friction model predicts tribological behaviour in lubrication regimes: thus, by judicious choice of materials (according to the most appropriate mechanical properties and surface roughness) one can reduce the running-in period. To confirm the model, different material pairs have been tested. The tests have been conducted using a pin on disc apparatus in a 100 Neutral solvent (100 NS) oil at 20 • C. Experimental results totally confirmed the model.

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Running-in of plain bearings

Cited by 25 publications

References 7 publications

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

A Stress-Criterion-Based Model for the Prediction of the Size of Wear Particles in Boundary Lubricated Contacts

Edge loading and running-in wear in dynamically loaded journal bearings

An experimental model for mixed friction during running-in

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