Mild Wear Prediction of Boundary-Lubricated Contacts

Bosman, Rob; Schipper, Dirk J.

doi:10.1007/s11249-011-9760-3

Cited by 37 publications

(32 citation statements)

References 40 publications

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“…Bosman and Schipper [36] proposed a compensation factor for the hardness as a function of temperature. The hardness at a given temperature can then be obtained by using the initial hardness given in Fig.…”

Section: Tribo-film Growth and Its Mechanical Modelmentioning

confidence: 99%

“…The concentration in the tribo-film will be highest close to the 'interface with the substrate material' and lower close to the 'free surface.' The loss of substrate material due to tribo-film wear will therefore decrease with increasing film thickness [9,36]. The following relation was used to calculate the concentration as a function of the tribo-film thickness h:…”

Section: Macroscale Contact With Roughnessmentioning

confidence: 99%

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A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

Akchurin

Bosman

2017

Tribol Lett

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A new model was developed for the simulation of growth and wear of tribo-chemical films by combining a boundary element method-based contact model and a stress-activated Arrhenius tribo-film growth equation. Using this methodology, it is possible to predict the evolution and steady-state thickness of the tribo-film (selflimitation) at various operating conditions. The model was validated using two cases for which experimental data were available in the literature. The first case is a single microscopic contact consisting of a DLC-coated AFM tip and an iron-coated substrate. The second case is a macroscale contact between a bearing steel ball and disk. Subsequently, mild wear (wear after running-in) was modeled by assuming diffusion of the substrate atoms into the tribofilm.

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Section: Tribo-film Growth and Its Mechanical Modelmentioning

confidence: 99%

Section: Macroscale Contact With Roughnessmentioning

confidence: 99%

A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

Akchurin

Bosman

2017

Tribol Lett

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“…Bosman et al [33,34] used diffusion reactions to capture the growth of tribofilm on the surfaces. They proposed a new wear model that considers partial removal of the tribofilm responsible for mild wear of boundary lubricated contacts.…”

Section: Wear Predictionmentioning

confidence: 99%

Study of the Interfacial Mechanism of ZDDP Tribofilm in Humid Environment and its Effect on Tribochemical Wear; Part II: Numerical

Parsaeian

Ghanbarzadeh

Eijk

et al. 2017

Tribology International

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Relative humidity and the effect on tribochemistry and wear of boundary lubricated systems are examined experimentally in part one of this study. In part II of this study the tribofilm thickness and wear results obtained experimentally are used to develop a semi-deterministic approach to implement the effect of humidity in wear prediction of boundary lubrication for the first time. Two approaches were used for this purpose; firstly, a modification factor was found to be suitable for Archard's wear equation to be able to account for the effect of relative humidity. This factor is found to be good for engineering designers to be able to predict the lifetime of machine parts. Secondly, the effect of humidity on the tribofilm growth on the surfaces was captured in the model and its effect on wear was tested based on a recent model

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“…A model developed by Bosman et al [31] proposed a numerical formulation for mild wear prediction under boundary lubrication conditions for ZDDP on steel surfaces. They suggested that ZDDP chemically reacted layers are the main mechanisms responsible for protecting boundary-lubricated systems, and when these layers are worn off, the system will restore the balance and the substrate will react with the oil to produce a tribofilm.…”

Section: Introductionmentioning

confidence: 99%

A Semi-deterministic Wear Model Considering the Effect of Zinc Dialkyl Dithiophosphate Tribofilm

et al. 2015

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Tribochemistry plays a very important role in the behaviour of systems in tribologically loaded contacts under boundary lubrication conditions. Previous works have mainly reported contact mechanics simulations for capturing the boundary lubrication regime, but the real mechanism in which tribofilms reduce wear is still unclear. In this paper, the wear prediction capabilities of a recently published mechanochemical simulation approach (Ghanbarzadeh et al. in Tribol Int, 2014) are tested. The wear model, which involves a time-and spatially dependent coefficient of wear, was tested for two additive concentrations and three temperatures at different times, and the predictions are validated against experimental results. The experiments were conducted using a mini-traction machine in a sliding/rolling condition, and the spacer layer interferometry method was used to measure the tribofilm thickness. Wear measurements have been taken using a white-light interferometry. Good agreement is seen between simulation and experiment in terms of tribofilm thickness and wear depth predictions.

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Mild Wear Prediction of Boundary-Lubricated Contacts

Cited by 37 publications

References 40 publications

A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

Study of the Interfacial Mechanism of ZDDP Tribofilm in Humid Environment and its Effect on Tribochemical Wear; Part II: Numerical

A Semi-deterministic Wear Model Considering the Effect of Zinc Dialkyl Dithiophosphate Tribofilm

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