Scuffing — a review

Dyson, A.

doi:10.1016/0301-679x(75)90029-8

Cited by 52 publications

(20 citation statements)

References 13 publications

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“…In the earlier studies of scuffing, this criterion provided good correlation with experimental results [25]. Recent studies have also suggested that FPI results are more reliable than Blok's criteria [24,63], although problems can be encountered when the contact area increases during measurements, due to large amounts of surface wear [64].…”

Section: Modelsmentioning

confidence: 65%

“…The results indicated that a large drop in critical temperature occurred when the specific film thickness (~) was reduced from > 6 to 1.2 even though test conditions remained unchanged. An excellent review of scuffing related research before 1975 based on Blok's critical temperature theory is presented by Dyson [25].…”

Section: Temperature Modelsmentioning

confidence: 99%

“…These models are based on the coefficient of friction which is difficult to measure accurately. This is one of the major drawbacks of these models and as a result they are difficult to implement as a scuffing criterion in a components design stage [25,37].…”

Section: Contact Temperature Calculationsmentioning

confidence: 99%

“…Contact thermal stability has been proposed as a scuffing model by Barwell and Milne [66,25]. At a critical combination of speed and load, the temperature rise increases the contact area and friction resulting in an unstable temperature condition.…”

Section: Modelsmentioning

confidence: 99%

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A review of scuffing models

Bowman

Stachowiak

1996

Tribol Lett

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The mechanism of wear known as scuffing has been a research topic of great interest for many years. However, the question of how scuffing is initiated and the factors that contribute to its occurrence are still poorly understood. In general, it can be said that scuffing manifests itself as the sudden failure of lubricating films in mechanical equipment operating under extreme conditions of load and/or speed. Components such as cams, tappets, gears and piston rings are all prone to scuffing failure. Understanding the mechanisms that initiate failure would enable the development of criteria for scuffing prediction. This paper reviews the numerous scuffing models and theories that exist today and, in doing so, defines the important factors involved in scuffing initiation. Emphasis is given to existing theoretical scuffing models which have been correlated by a wealth of research data obtained from experimental test rigs.

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Section: Modelsmentioning

confidence: 65%

Section: Temperature Modelsmentioning

confidence: 99%

Section: Contact Temperature Calculationsmentioning

confidence: 99%

Section: Modelsmentioning

confidence: 99%

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A review of scuffing models

Bowman

Stachowiak

1996

Tribol Lett

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“…Scuffing has been modelled as a result of overheating in the lubricated contact and the concept of a "critical temperature" [1,2] is often used to estimate the likelihood of scuffing. The commonly accepted mechanical model of scuffing, initially proposed by Dyson [2], implies that the contact pressure between asperities causes the lubricant viscosity to increase. At the same time the temperature also increases due to frictional heating.…”

Section: Introductionmentioning

confidence: 99%

Model of scuffing based on the vulnerability of an elastohydrodynamic oil film to chemical degradation catalyzed by the contacting surfaces

Batchelor

Stachowiak

1995

Tribol Lett

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A model of scuffing is developed based on the premise that metallic surfaces can catalyze degradation of the lubricant film in situ. A failure mechanism for elastohydrodynamic films based on rapid decomposition of mineral and synthetic oils involving chemical reaction between entrapped oil and the containing surfaces is proposed. It is suggested that this destruction of the elastohydrodynamic oil film allows adhesion between nascent metal of opposing surfaces in the contact which in turn causes scuffing. Suppression of scuffing by the application of coatings that do not catalyze the oil decomposition and by the action of some lubricant additives which may block the catalytic effect of metallic surfaces is discussed. Effect of solid lubricant films and contaminant layers on scuffing is also described.

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Three‐dimensional numerical solution for wear prediction using a mortar contact algorithm

Cavalieri

Cardona

2013

Numerical Meth Engineering

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SUMMARYA finite element formulation to compute the wear between three‐dimensional flexible bodies that are in contact with each other is presented. The contact pressure and the bodies displacements are calculated using an augmented Lagrangian approach in combination with a mortar method, which defines the contact kinematics. The objective of this study is to characterize the wear rate coefficients for bimetallic pairs and to numerically predict the wear depths in new component designs. The proposed method is first validated with the classical pin‐on‐disc problem. Then, experimental results of wear for the metallic pairs used in internal combustion engine valves and inserts are presented and are taken as a reference solution. An example is provided that shows agreement of the numerical and experimental solution. Finally, the proposed algorithm is used to predict the wear in an application example: the wear in an internal combustion engine valve. Copyright © 2013 John Wiley & Sons, Ltd.

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Scuffing — a review

Cited by 52 publications

References 13 publications

A review of scuffing models

A review of scuffing models

Model of scuffing based on the vulnerability of an elastohydrodynamic oil film to chemical degradation catalyzed by the contacting surfaces

Three‐dimensional numerical solution for wear prediction using a mortar contact algorithm

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