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Elastic Waves of a Single Elasto-Hydrodynamically Lubricated Contact
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-9110-2819
Number of Authors: 3
2017 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 65, no 1, 5Article in journal (Refereed) Published
Abstract [en]

Elastic waves are widely used for condition monitoring of rolling element bearings through vibration or acoustic emission measurements . While vibration signals are understood to a high degree due to many scientific investigations as well as a long history of usage in the field, acoustic emission signals of rolling element bearings are poorly understood. Therefore, this investigation presents simulation studies and measurements of a single elasto-hydrodynamically lubricated (EHL) contact. In this investigation the EHL contact is a ball bouncing on a lubricated plate. The simulation based on Green’s function and the measurements based on a accelerometer to some extent agree. A shift of zero frequencies towards higher frequencies when compared to Hertzian reference measurements was determined for an infinite plate setup. Taking boundary restrictions into account, elastic waves of a Hertzian contact and an EHL contact only differ by a damping of higher resonances which is most likely caused by the EHL film.

Place, publisher, year, edition, pages
2017. Vol. 65, no 1, 5
Keyword [en]
EHL contact, EHL, Hertz contact, Elastic waves, Acoustic emission, Green’s function, Ball impact, Bouncing ball
National Category
Tribology Fluid Mechanics and Acoustics Applied Mechanics
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-60962DOI: 10.1007/s11249-016-0785-5ISI: 000397039300005Scopus ID: 2-s2.0-85000443041OAI: oai:DiVA.org:ltu-60962DiVA: diva2:1052720
Funder
VINNOVA, 198503
Note

Validerad; 2017; Nivå 2; 2016-12-19 (andbra)

Available from: 2016-12-07 Created: 2016-12-07 Last updated: 2017-11-29Bibliographically approved

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Publisher's full textScopushttp://link.springer.com/article/10.1007/s11249-016-0785-5

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