Experimental Investigation for Finite Line Contact Edge Effect of Elastohydrodynamic Lubrication

Abstract:

To reveal the principle of the close effect about the EHL finite roller, contraposing the log-convex roller, the finite line contact EHL film shape and thickness were observed through self-made heavy-load optical EHL experimental device. Experiments were carried out under several different pressure and viscosity, and three groups of interference pictures were obtained under three different entrainment velocities. As the load increased, both the length and width of the roller contact area added, and the width of the contact zone in the end was larger than that in the centre, the close effect was more obvious; when the entrainment velocity and lubricant viscosity increased, the film thickness in the central roller became thicker while the increase in the roller end was little, the high film thickness difference enhanced the close effect. The entrainment velocity, load and lubricant viscosity all have great effect on the EHL characteristics of the finite roller.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1945-1951
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1945
• Online since: June 2012
• Authors: Yu Xue, Tong Shu Hua, Hao Yang Sun
• Keywords: Close Effect, Elastohydrodynamic Lubrication, Finite Line Contact

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