Pitting Influence on Electrical Capacitance in EHL Rolling Contacts
This work presents an investigation on the influence of pitting in EHL rolling contact. The pitting geometry comes as an extension on the architecture for multi-physical numerical calculations of rolling element bearing contacts based on OpenFOAM. The model utilized is built according to the state-o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/11/10/419 |
| _version_ | 1797573238782427136 |
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| author | Anatoly Zaiat Karim Ibrahim Eckhard Kirchner |
| author_facet | Anatoly Zaiat Karim Ibrahim Eckhard Kirchner |
| author_sort | Anatoly Zaiat |
| collection | DOAJ |
| description | This work presents an investigation on the influence of pitting in EHL rolling contact. The pitting geometry comes as an extension on the architecture for multi-physical numerical calculations of rolling element bearing contacts based on OpenFOAM. The model utilized is built according to the state-of-the-art for fluid–solid interaction and electro-quasi-static fields. In this framework, the contact is reduced to be two dimensional in order to reduce the computing costs needed. The changes in the electric properties, which are caused by pittings, are measured using the electric capacitance of the contact and put in perspective with regard to the EHL contacts geometry. The investigation delivers an evaluation on how surface degradation, in both the pitting width <i>w</i> and pitting depth <i>d</i> of the contact, affects the electric properties. It can be seen that the maximum deviations with different reduced radii for the same pitting structures are around 5% and would therefore hardly be distinguishable with corresponding measurements. By comparing the same data for the same ratio of pitting width to reduced radius, on the other hand, differences of up to 50% can be seen. |
| first_indexed | 2024-03-10T21:07:00Z |
| format | Article |
| id | doaj.art-8bfa2b90ce87456f999c1f6c98cbfd25 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T21:07:00Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-8bfa2b90ce87456f999c1f6c98cbfd252023-11-19T17:07:34ZengMDPI AGLubricants2075-44422023-09-01111041910.3390/lubricants11100419Pitting Influence on Electrical Capacitance in EHL Rolling ContactsAnatoly Zaiat0Karim Ibrahim1Eckhard Kirchner2Product Development and Machine Elements, Technical University of Darmstadt, Otto-Berndt-Straße 2, 64287 Darmstadt, GermanyProduct Development and Machine Elements, Technical University of Darmstadt, Otto-Berndt-Straße 2, 64287 Darmstadt, GermanyProduct Development and Machine Elements, Technical University of Darmstadt, Otto-Berndt-Straße 2, 64287 Darmstadt, GermanyThis work presents an investigation on the influence of pitting in EHL rolling contact. The pitting geometry comes as an extension on the architecture for multi-physical numerical calculations of rolling element bearing contacts based on OpenFOAM. The model utilized is built according to the state-of-the-art for fluid–solid interaction and electro-quasi-static fields. In this framework, the contact is reduced to be two dimensional in order to reduce the computing costs needed. The changes in the electric properties, which are caused by pittings, are measured using the electric capacitance of the contact and put in perspective with regard to the EHL contacts geometry. The investigation delivers an evaluation on how surface degradation, in both the pitting width <i>w</i> and pitting depth <i>d</i> of the contact, affects the electric properties. It can be seen that the maximum deviations with different reduced radii for the same pitting structures are around 5% and would therefore hardly be distinguishable with corresponding measurements. By comparing the same data for the same ratio of pitting width to reduced radius, on the other hand, differences of up to 50% can be seen.https://www.mdpi.com/2075-4442/11/10/419EHL (elasto-hydrodynamic lubrication)FSI (fluid–solid interaction)tribologyrolling bearingcondition monitoringpredictive maintenance |
| spellingShingle | Anatoly Zaiat Karim Ibrahim Eckhard Kirchner Pitting Influence on Electrical Capacitance in EHL Rolling Contacts Lubricants EHL (elasto-hydrodynamic lubrication) FSI (fluid–solid interaction) tribology rolling bearing condition monitoring predictive maintenance |
| title | Pitting Influence on Electrical Capacitance in EHL Rolling Contacts |
| title_full | Pitting Influence on Electrical Capacitance in EHL Rolling Contacts |
| title_fullStr | Pitting Influence on Electrical Capacitance in EHL Rolling Contacts |
| title_full_unstemmed | Pitting Influence on Electrical Capacitance in EHL Rolling Contacts |
| title_short | Pitting Influence on Electrical Capacitance in EHL Rolling Contacts |
| title_sort | pitting influence on electrical capacitance in ehl rolling contacts |
| topic | EHL (elasto-hydrodynamic lubrication) FSI (fluid–solid interaction) tribology rolling bearing condition monitoring predictive maintenance |
| url | https://www.mdpi.com/2075-4442/11/10/419 |
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