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First International Brazil Conference on Tribology TriboBr-2010 and 2nd Internacional Tribology Symposium of IFToMM — vol. 1, num.1 (2010)

Title

OIL FILM THICKNESS AND SHAPE IN OSCILLATING ROLLER CONTACTS

OIL FILM THICKNESS AND SHAPE IN OSCILLATING ROLLER CONTACTS

Authorship

Chen, Xiaoyang; Hua, Tongshu; Shen, Xuejing

Chen, Xiaoyang
Chen, Xiaoyang

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Hua, Tongshu
Hua, Tongshu

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Shen, Xuejing
Shen, Xuejing

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DOI

10.5151/5463-5463-17233

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Abstract

In this paper, the elastohydrodynamic lubrication (EHL) oil film thickness and shape between a roller and a flat rectangular glass in pure rolling oscillated working conditions had been measured based on the principle of optical interferometry. The EHL behavior affected by the applied load, oscillating frequency was investigated. The typical film shape varies of interference pictures on non-steady state motion, such as acceleration and deceleration, stop and start rapidly was obtained. When the velocities of roller decreased to zero and then start in opposite directions, it was found the oil film can remain in a certain thickness for a short time because of the lubricant transient inertia effects, which is weakly viscosity-dependent or load-dependent. These phenomena could reduce wear for oscillating roller contacts. And the side constrictions are always the most severe. They are strongly viscosity and load dependent.

 

In this paper, the elastohydrodynamic lubrication (EHL) oil film thickness and shape between a roller and a flat rectangular glass in pure rolling oscillated working conditions had been measured based on the principle of optical interferometry. The EHL behavior affected by the applied load, oscillating frequency was investigated. The typical film shape varies of interference pictures on non-steady state motion, such as acceleration and deceleration, stop and start rapidly was obtained. When the velocities of roller decreased to zero and then start in opposite directions, it was found the oil film can remain in a certain thickness for a short time because of the lubricant transient inertia effects, which is weakly viscosity-dependent or load-dependent. These phenomena could reduce wear for oscillating roller contacts. And the side constrictions are always the most severe. They are strongly viscosity and load dependent.

Keywords

EHL; Optical interferometry test; Oil film measurement; Oscillating roller contacts.

EHL; Optical interferometry test; Oil film measurement; Oscillating roller contacts.

How to refer

Chen, Xiaoyang; Hua, Tongshu; Shen, Xuejing. OIL FILM THICKNESS AND SHAPE IN OSCILLATING ROLLER CONTACTS , p. 266-276. In: First International Brazil Conference on Tribology TriboBr-2010 and 2nd Internacional Tribology Symposium of IFToMM, Rio de Janeiro, 2010.
ISSN: - , DOI 10.5151/5463-5463-17233