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[1] Pape, F., Mallach, D., Lipinsky, D., Arlinghaus, H.F. & Poll, G., Investigations of boundary layers generated in a micro pin-on-disk tester, Presentation, 45th Leeds-Lyon Symposium in Tribology 2018, Smart Tribology Systems, Leeds, UK, 2019.
[2] Neville A. & Morina, A., Wear and Chemistry of Lubricants, Wear: Materials, Mechanisms and Practice, eds. G.W. Stachowiak, Wiley, Chichester, England Hoboken, NJ, 2005.
[3] Fujita, H. and Spikes, H.A., The formation of zinc dithiophosphate antiwear films, Proceedings of the Institution of Mechanical Engineers. Part J: Journal of Engineering Tribology, 218(4), pp. 265–277, 2004.
[4] Bares, J.A., Carpick, R.W., Gosvami, N.N., Konicek, A.R., Mangolini, F. & Yablon, D.G., Mechanisms of antiwear tribofilm growth revealed in situ by single-asperity sliding contacts. Science, 348(6230), pp. 102–106, 2015.
[5] Gachot, C., Hsu, C., Suárez, S., Grützmacher, P., Rosenkranz, A., Stratmann, A. & Jacobs, G., Microstructural and chemical characterization of the tribolayer formation in highly loaded cylindrical roller thrust bearings. Lubricants, 4(2), 2016.
[6] Zhang, J. & Spikes, H., On the mechanism of ZDDP antiwear film formation. Tribology Letters, 63(2), p. 24, 2016. [Crossref]
[7] Lipinski, D., Muhmann, C., Arlinghaus, H.F., Möbes, G., Pape, F. & Poll, G., Untersuchung der unter tribologischer Belastung auf Laufflächen von Axialzylinderrollenlagern gebildeten tribologischen Grenzschichten mit Hilfe von mikrotribologischen Verfahren und der Flugzeit-Sekundärionenmassenspektrometrie (ToF-SIMS), Tagungsband, Getlub Kongress, März 09.-10., Forschungsvereinigung Antriebstechnik e.V., p. 168–181, 2016.
[8] Lipinsky, D., Muhmann, C., Arlinghaus, H.F., Möbes, G., Pape, F. & Poll, G., Grenzschichtanalysen an WEC-gefährdeten Wälzlager-Laufflächen, Bearing World, Hannover, Germany, April 12–13, 2016.
[9] Muhmann, C., Lipinsky, L., Pape, F., Möbes, G., Poll, G. & Arlinghaus, H.F., ToF-SIMS investigation of boundary layers built up under tribological load in the runways of axial cylindrical roller bearings, SIMS Europe 2016, September 18–20, Münster, Germany, 2016.
[10] Wittel, H., Muhs, D., Jannasch, D. & Voßiek, J. (Hrsg.), Maschinenelemente, Springer Fachmedien Wiesbaden, 2011.
[11] Seherr-Thoss, H.-C. G. v., Schmelz, F. & Aucktor, E., Gelenke und Gelenkwellen, Springer, Berlin Heidelberg, 2002.
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Open Access
Research article

Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure

Florian Pape,
Martin Petzold,
Gerhard Poll
Institute for machine Design and Tribology, leibniz university Hannover, Germany
International Journal of Computational Methods and Experimental Measurements
|
Volume 7, Issue 4, 2019
|
Pages 340-349
Received: N/A,
Revised: N/A,
Accepted: N/A,
Available online: N/A
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Abstract:

To reduce wear in tribosystems, the formation of a protective tribofilm is beneficial. by applying additives to the lubricating oil or grease, an anti-wear boundary layer can be achieved. For simulating the induced stresses on the bearings surface, the formed tribofilm should be regarded. In this study, cylindrical roller thrust bearings were investigated regarding a tribofilm formed by oil containing zinc dialkyldithiophosphate (ZDDP) additives. Due to the test conditions, a smooth film with low roughness forms on the surface. The film consists of glassy Fe/Zn polyphosphates with a height of up to 150 nm and a width of approximately 1 µm. based on the roughness, the surface was modelled with regularly distributed dimples to be used for a finite element model for the contact between a roller and a bearing washer regarding contact stress and tangential forces due to slip. The dimples in the contact between roller and washer lead to an inhomogeneous pressure distribution near the surface. During the contact, the surface pads of the roller partly slide over the surface pads of the washer in dependence of the contact position. of particular interest is the deformation in running direction. If the asperities of the roller press against the washers asperities, a significant deformation at the dimples and in the volume underneath occurs. As expected, the strains occur in the regions with high deformation gradients. During rolling, the deformations lead to areas that are stretched and compressed. The maximum strains are located between the dimples and shift in rolling direction from pad to pad. It has to be assumed, that the formation of cracks starts between the dimples at the surface and develop along the stretched areas whereas the cracking in the compressed areas is suppressed or at least impeded. The simulative results were compared to literature proving that the values determined by simulation are in well agreement.

Keywords: Bearing, Crack Formation White Etching Cracks, Tribofilm, Friction, Zinc dialkyldithiophosphate

1. Introduction

2. Experimental Setup

3. Modelling the Tribological Contact

4. Calculation Results

5. Conclusion

Data Availability

The data used to support the findings of this study are available from the corresponding author upon request.

Acknowledgments

This work was sponsored in part by the DFG (German Research Centre) within the research program ‘Influence of stress states in rolling bearings on White Etching Cracks’ (DFG-PO675/9-1). The results presented here were (partially) carried out on the cluster system at the Leibniz University of Hannover, Germany.

Conflicts of Interest

The data used to support the findings of this study are available from the corresponding author upon request.

References
[1] Pape, F., Mallach, D., Lipinsky, D., Arlinghaus, H.F. & Poll, G., Investigations of boundary layers generated in a micro pin-on-disk tester, Presentation, 45th Leeds-Lyon Symposium in Tribology 2018, Smart Tribology Systems, Leeds, UK, 2019.
[2] Neville A. & Morina, A., Wear and Chemistry of Lubricants, Wear: Materials, Mechanisms and Practice, eds. G.W. Stachowiak, Wiley, Chichester, England Hoboken, NJ, 2005.
[3] Fujita, H. and Spikes, H.A., The formation of zinc dithiophosphate antiwear films, Proceedings of the Institution of Mechanical Engineers. Part J: Journal of Engineering Tribology, 218(4), pp. 265–277, 2004.
[4] Bares, J.A., Carpick, R.W., Gosvami, N.N., Konicek, A.R., Mangolini, F. & Yablon, D.G., Mechanisms of antiwear tribofilm growth revealed in situ by single-asperity sliding contacts. Science, 348(6230), pp. 102–106, 2015.
[5] Gachot, C., Hsu, C., Suárez, S., Grützmacher, P., Rosenkranz, A., Stratmann, A. & Jacobs, G., Microstructural and chemical characterization of the tribolayer formation in highly loaded cylindrical roller thrust bearings. Lubricants, 4(2), 2016.
[6] Zhang, J. & Spikes, H., On the mechanism of ZDDP antiwear film formation. Tribology Letters, 63(2), p. 24, 2016. [Crossref]
[7] Lipinski, D., Muhmann, C., Arlinghaus, H.F., Möbes, G., Pape, F. & Poll, G., Untersuchung der unter tribologischer Belastung auf Laufflächen von Axialzylinderrollenlagern gebildeten tribologischen Grenzschichten mit Hilfe von mikrotribologischen Verfahren und der Flugzeit-Sekundärionenmassenspektrometrie (ToF-SIMS), Tagungsband, Getlub Kongress, März 09.-10., Forschungsvereinigung Antriebstechnik e.V., p. 168–181, 2016.
[8] Lipinsky, D., Muhmann, C., Arlinghaus, H.F., Möbes, G., Pape, F. & Poll, G., Grenzschichtanalysen an WEC-gefährdeten Wälzlager-Laufflächen, Bearing World, Hannover, Germany, April 12–13, 2016.
[9] Muhmann, C., Lipinsky, L., Pape, F., Möbes, G., Poll, G. & Arlinghaus, H.F., ToF-SIMS investigation of boundary layers built up under tribological load in the runways of axial cylindrical roller bearings, SIMS Europe 2016, September 18–20, Münster, Germany, 2016.
[10] Wittel, H., Muhs, D., Jannasch, D. & Voßiek, J. (Hrsg.), Maschinenelemente, Springer Fachmedien Wiesbaden, 2011.
[11] Seherr-Thoss, H.-C. G. v., Schmelz, F. & Aucktor, E., Gelenke und Gelenkwellen, Springer, Berlin Heidelberg, 2002.
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Pape, F., Petzold, M., & Poll, G. (2019). Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure. Int. J. Comput. Methods Exp. Meas., 7(4), 340-349. https://doi.org/10.2495/CMEM-V7-N4-340-349
F. Pape, M. Petzold, and G. Poll, "Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure," Int. J. Comput. Methods Exp. Meas., vol. 7, no. 4, pp. 340-349, 2019. https://doi.org/10.2495/CMEM-V7-N4-340-349
@research-article{Pape2019ComputationalIO,
title={Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure},
author={Florian Pape and Martin Petzold and Gerhard Poll},
journal={International Journal of Computational Methods and Experimental Measurements},
year={2019},
page={340-349},
doi={https://doi.org/10.2495/CMEM-V7-N4-340-349}
}
Florian Pape, et al. "Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure." International Journal of Computational Methods and Experimental Measurements, v 7, pp 340-349. doi: https://doi.org/10.2495/CMEM-V7-N4-340-349
Florian Pape, Martin Petzold and Gerhard Poll. "Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure." International Journal of Computational Methods and Experimental Measurements, 7, (2019): 340-349. doi: https://doi.org/10.2495/CMEM-V7-N4-340-349
PAPE F， PETZOlD M， Poll G. Computational Investigation of Crack Inducing Forces on Bearing Surfaces Regarding the Tribofilm Structure[J]. International Journal of Computational Methods and Experimental Measurements， 2019， 7(4)： 340-349. https://doi.org/10.2495/CMEM-V7-N4-340-349