Contact dynamics of EHL contacts with time varying operating conditions

C.H. Venner; G. Popovici; Y.H. Wijnant

doi:10.1016/S0167-8922(03)80047-0

Contact dynamics of EHL contacts with time varying operating conditions

C.H. Venner^*, G. Popovici, Y.H. Wijnant

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

4 Citations (Scopus)

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Abstract

By means of numerical simulations of two situations with time varying operating conditions it is shown that the dynamic behaviour of Elasto-Hydrodynamically Lubricated contacts in terms of vibrations can be characterized as: Changes in the mutual approach lead to film thickness changes in the inlet which are propagated through the film at the momentary entrainment speed. The mutual approach of the two contacting bodies is determined by the equation of motion. The frequency of oscillations that occur can accurately be predicted from a simplified analysis based on a Hertzian dry contact. The amplitude of the induced film thickness oscilations depends on the elastic: properties of the loading system and on the amount of lubricant supplied. The damping depends on the lubricant properties and on the degree of starvation. The computations were carried out for the configuration of a ball on disk apparatus for which experimental results have been published.

Original language	English
Title of host publication	Transient Processes in Tribology
Subtitle of host publication	Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France
Editors	G. Dalmaz, A.A. Lubrecht, D. Dowson, M. Priest
Publisher	Elsevier
Pages	189-200
Number of pages	12
ISBN (Print)	978-0-444-51706-7
DOIs	https://doi.org/10.1016/S0167-8922(03)80047-0
Publication status	Published - 2003
Event	30th Leeds-Lyon Symposium on Tribology 2003 - INSA, Lyon, France Duration: 2 Sept 2003 → 8 Sept 2003 Conference number: 30

Publication series

Name	Tribology Series
Publisher	Elsevier
Volume	43
ISSN (Print)	0167-8922

Conference

Conference	30th Leeds-Lyon Symposium on Tribology 2003
Country/Territory	France
City	Lyon
Period	2/09/03 → 8/09/03

Access to Document

10.1016/S0167-8922(03)80047-0

Cite this

Venner, C. H., Popovici, G., & Wijnant, Y. H. (2003). Contact dynamics of EHL contacts with time varying operating conditions. In G. Dalmaz, A. A. Lubrecht, D. Dowson, & M. Priest (Eds.), Transient Processes in Tribology: Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France (pp. 189-200). (Tribology Series; Vol. 43). Elsevier. https://doi.org/10.1016/S0167-8922(03)80047-0

Venner, C.H. ; Popovici, G. ; Wijnant, Y.H. / Contact dynamics of EHL contacts with time varying operating conditions. Transient Processes in Tribology: Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France. editor / G. Dalmaz ; A.A. Lubrecht ; D. Dowson ; M. Priest. Elsevier, 2003. pp. 189-200 (Tribology Series).

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title = "Contact dynamics of EHL contacts with time varying operating conditions",

abstract = "By means of numerical simulations of two situations with time varying operating conditions it is shown that the dynamic behaviour of Elasto-Hydrodynamically Lubricated contacts in terms of vibrations can be characterized as: Changes in the mutual approach lead to film thickness changes in the inlet which are propagated through the film at the momentary entrainment speed. The mutual approach of the two contacting bodies is determined by the equation of motion. The frequency of oscillations that occur can accurately be predicted from a simplified analysis based on a Hertzian dry contact. The amplitude of the induced film thickness oscilations depends on the elastic: properties of the loading system and on the amount of lubricant supplied. The damping depends on the lubricant properties and on the degree of starvation. The computations were carried out for the configuration of a ball on disk apparatus for which experimental results have been published.",

author = "C.H. Venner and G. Popovici and Y.H. Wijnant",

year = "2003",

doi = "10.1016/S0167-8922(03)80047-0",

language = "English",

isbn = "978-0-444-51706-7",

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publisher = "Elsevier",

pages = "189--200",

editor = "G. Dalmaz and A.A. Lubrecht and D. Dowson and M. Priest",

booktitle = "Transient Processes in Tribology",

note = "30th Leeds-Lyon Symposium on Tribology 2003 ; Conference date: 02-09-2003 Through 08-09-2003",

}

Venner, CH, Popovici, G & Wijnant, YH 2003, Contact dynamics of EHL contacts with time varying operating conditions. in G Dalmaz, AA Lubrecht, D Dowson & M Priest (eds), Transient Processes in Tribology: Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France. Tribology Series, vol. 43, Elsevier, pp. 189-200, 30th Leeds-Lyon Symposium on Tribology 2003, Lyon, France, 2/09/03. https://doi.org/10.1016/S0167-8922(03)80047-0

Contact dynamics of EHL contacts with time varying operating conditions. / Venner, C.H.; Popovici, G.; Wijnant, Y.H.
Transient Processes in Tribology: Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France. ed. / G. Dalmaz; A.A. Lubrecht; D. Dowson; M. Priest. Elsevier, 2003. p. 189-200 (Tribology Series; Vol. 43).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - Contact dynamics of EHL contacts with time varying operating conditions

AU - Venner, C.H.

AU - Popovici, G.

AU - Wijnant, Y.H.

N1 - Conference code: 30

PY - 2003

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N2 - By means of numerical simulations of two situations with time varying operating conditions it is shown that the dynamic behaviour of Elasto-Hydrodynamically Lubricated contacts in terms of vibrations can be characterized as: Changes in the mutual approach lead to film thickness changes in the inlet which are propagated through the film at the momentary entrainment speed. The mutual approach of the two contacting bodies is determined by the equation of motion. The frequency of oscillations that occur can accurately be predicted from a simplified analysis based on a Hertzian dry contact. The amplitude of the induced film thickness oscilations depends on the elastic: properties of the loading system and on the amount of lubricant supplied. The damping depends on the lubricant properties and on the degree of starvation. The computations were carried out for the configuration of a ball on disk apparatus for which experimental results have been published.

AB - By means of numerical simulations of two situations with time varying operating conditions it is shown that the dynamic behaviour of Elasto-Hydrodynamically Lubricated contacts in terms of vibrations can be characterized as: Changes in the mutual approach lead to film thickness changes in the inlet which are propagated through the film at the momentary entrainment speed. The mutual approach of the two contacting bodies is determined by the equation of motion. The frequency of oscillations that occur can accurately be predicted from a simplified analysis based on a Hertzian dry contact. The amplitude of the induced film thickness oscilations depends on the elastic: properties of the loading system and on the amount of lubricant supplied. The damping depends on the lubricant properties and on the degree of starvation. The computations were carried out for the configuration of a ball on disk apparatus for which experimental results have been published.

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Venner CH, Popovici G, Wijnant YH. Contact dynamics of EHL contacts with time varying operating conditions. In Dalmaz G, Lubrecht AA, Dowson D, Priest M, editors, Transient Processes in Tribology: Proceedings of the 30th Leeds-Lyon Symposium on Tribology 2-8 September 2003, INSA de Lyon Villeurbanne, France. Elsevier. 2003. p. 189-200. (Tribology Series). doi: 10.1016/S0167-8922(03)80047-0

Contact dynamics of EHL contacts with time varying operating conditions

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