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Electrotribodynamics of ball bearings in electrical machines
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, United Kingdom.
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, United Kingdom.
Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation. Gas Turbine and Transmission Research Centre, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, United Kingdom.ORCID iD: 0000-0003-4720-0897
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, United Kingdom.
2023 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 188, p. 108817-108817, article id 108817Article in journal (Refereed) Published
Abstract [en]

The trend towards electrification presents new challenges in bearing design. One such consideration is the occurrence of electrical discharge contact pathways, which can lead to surface damage. The current study presents a novel comprehensive multiphysics model, incorporating bearing dynamics, mechanics of lubricated rolling element-to-races contacts and electrical contact model for both DC and AC voltages. The model also includes both electrical resistance and capacitance effects in the bearing contacts. Key bearing vibration frequencies such as cage frequency and the bearing base natural frequency along with the voltage supply frequency are observed as influential in the electric current discharge. The developed model enables the prediction of rhythmic fluting patterns commonly observed in the failed bearing applications subject to electrical discharge.

Place, publisher, year, edition, pages
2023. Vol. 188, p. 108817-108817, article id 108817
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-64163DOI: 10.1016/j.triboint.2023.108817ISI: 001052514400001Scopus ID: 2-s2.0-85166625688OAI: oai:DiVA.org:mdh-64163DiVA, id: diva2:1794369
Available from: 2023-09-05 Created: 2023-09-05 Last updated: 2023-09-11Bibliographically approved

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Paul, Satyam

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