A Model for Potential Adhesive Wear Particle at Sliding Inception of a Spherical Contact

Salib, J.; Kligerman, Y.; Etsion, I.

doi:10.1007/s11249-008-9331-4

Cited by 25 publications

(12 citation statements)

References 26 publications

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“…The phenomenon of material transfer suggests that slip takes place on a certain slip plane below the contact surface (see e.g. Salib et al, 2008) thereby allowing a certain small particle to detach from the deformable sphere and remain stuck to the sliding rigid flat. If sliding inception would require full slip exclusively at the contact interface, as suggested by the CMC, adhesive wear and material transfer would not be possible.…”

Section: Fig 1 Spherical Contact Under Combined Normal and Tangentimentioning

confidence: 99%

Revisiting the Cattaneo–Mindlin Concept of Interfacial Slip in Tangentially Loaded Compliant Bodies

Etsion

2010

Journal of Tribology

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The Cattaneo-Mindlin concept of interfacial slip in tangentially loaded compliant bodies is revisited and its basic simplifying assumptions are critically examined. It is shown that these assumptions, which, in the absence of modern numerical techniques, were essential in 1949 to enable an elegant quantitative solution of the basic problem of pre-sliding between contacting bodies, are actually non physical. An alternative approach to the same problem that is based on treating sliding inception as a failure mode involving material plastic yield is discussed. This alternative approach was suggested even before 1949 but for the same lack of modern numerical techniques could only be promoted qualitatively. Some recent theoretical models, that are based on this earlier alternative approach, and in which the simplifying assumptions of the Cattaneo-Mindlin concept were completely relaxed are described along with their experimental verification. It is shown that the pre-sliding problem between contacting bodies can be accurately solved by these models using realistic physical assumptions and failure criterion.

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Section: Fig 1 Spherical Contact Under Combined Normal and Tangentimentioning

confidence: 99%

Revisiting the Cattaneo–Mindlin Concept of Interfacial Slip in Tangentially Loaded Compliant Bodies

Etsion

2010

Journal of Tribology

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“…Peng [21] discussed the development of a mixed lubrication model using the multiple-grid method for a reciprocating rod seal. Salib et al [22] presented a new approach for adhesive wear modeling based on physical principles with no need for an empirical wear coefficient. The authors presented an empirical expression for predicting the wear coefficient.…”

Section: Introductionmentioning

confidence: 99%

A Wear Simulation Method for Mechanical Face Seals under Friction Instability Conditions

Wang

Zhang

et al. 2020

Applied Sciences

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Mechanical face seals are crucial components of automotive cooling water pumps and affect the safe operation of the pump. This article focuses on the effect of friction instabilities on the wear of the seals. Friction instabilities, such as stick-slip, occur when the axle is decelerated or operated at a low speed. Based on previous studies, a simulation model is proposed of a mechanical face seal that considers the interaction of asperities of non-Gaussian surfaces and the heat transfer between the sealing rings. According to the Archard wear equation, a numerical wear simulation is performed, and the wear distance rate and wear time rate are obtained. A comparison of the contact pressure of the Gaussian and non-Gaussian surfaces indicates that the latter is more likely to generate high contact pressure, thereby producing more significant wear. The viscous shear heat and frictional heat due to asperity contact decrease with an increase in the thickness of the tapered film. As the shaft decelerates, the wear distance rate increases with an increase in the axial stiffness. The axial damping only affects the duration of the oscillations. The wear time rate decreases with an increase in the torsional stiffness and torsional damping. The results of this research provide guidelines for estimating the wear of mechanical seals when friction instabilities occur.

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“…On one hand, it can be desirable in some cases such as a braking system [1] and power transmission system [2,3]. On the other hand, it may not be favored as high friction can lead to severe material wear [4] and undesirable energy consumption [5]. Thus, proper control of friction is an essential goal for the surface engineering community.…”

Section: Introductionmentioning

confidence: 99%

Model for the static friction coefficient in a full stick elastic-plastic coated spherical contact

Zhou

Etsion

2018

Friction

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Finite element analysis is used to investigate an elastic-plastic coated spherical contact in full stick contact condition under combined normal and tangential loading. Sliding inception is associated with a loss of tangential stiffness. The effect of coating thickness on the static friction coefficient is intensively investigated for the case of hard coatings. For this case, with the increase in coating thickness, the static friction coefficient first increases to its maximum value at a certain coating thickness, thereafter decreases, and eventually levels off. The effect of the normal load and material properties on this behavior is discussed. Finally, a model for the static friction coefficient as a function of the coating thickness is provided for a wide range of material properties and normal loading.

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A Model for Potential Adhesive Wear Particle at Sliding Inception of a Spherical Contact

Cited by 25 publications

References 26 publications

Revisiting the Cattaneo–Mindlin Concept of Interfacial Slip in Tangentially Loaded Compliant Bodies

Revisiting the Cattaneo–Mindlin Concept of Interfacial Slip in Tangentially Loaded Compliant Bodies

A Wear Simulation Method for Mechanical Face Seals under Friction Instability Conditions

Model for the static friction coefficient in a full stick elastic-plastic coated spherical contact

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