Abstract
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.
Highlights
Failure of equipment due to wear has led to considerable effort in understanding wear and in the development of predictive models for wear
The simulation results will be compared to the experimental data obtained in Ref. [49]
Equivalent radii of the particles were calculated to accommodate a direct comparison between the two methods (DLS determines only equivalent radii)
Summary
Failure of equipment due to wear has led to considerable effort in understanding wear and in the development of predictive models for wear. One of the most famous and frequently used wear equations was developed by Holm and Archard in 1953 [2]. The coefficient k is known as a wear coefficient and is frequently used to compare the degree of the wear resistance of systems [3, 4]. It can be regarded as the probability that a wear particle will be formed during contact. Archard originally developed this equation to model adhesive wear, it is widely used for modeling abrasive, fretting and other types of wear [5] as well
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