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Lubrication Analyses of Cam and Flat-Faced Follower

1
Mechanical Engineering Department, College of Engineering, University of Kerbala, 56001Kerbala, Iraq
2
Department of Energy Engineering, College of Engineering, University of Baghdad, 47024 Baghdad, Iraq
3
System Technologies and Engineering Design Methodology, Hamburg University of Technology, 21073 Hamburg, Germany
4
Department of Industrial Engineering, University of Salerno, I-84084 Fisciano, Italy
*
Author to whom correspondence should be addressed.
Lubricants 2019, 7(4), 31; https://doi.org/10.3390/lubricants7040031
Received: 14 February 2019 / Revised: 30 March 2019 / Accepted: 3 April 2019 / Published: 5 April 2019
(This article belongs to the Special Issue Automotive Tribology)
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Abstract

The principal factors that affect the characteristics of contact problem between cam and follower vary enormously during the operating cycle of this mechanism. This includes radius of curvature, surface velocities and applied load. It has been found over the last decades that the mechanism operates under an extremely thin film of lubricant. Any practical improvement in the level of film thickness that separates the contacted surfaces represents an essential step towards a satisfactory design of the system. In this paper a detailed numerical study is presented for the cam and follower (flat-faced) lubrication including the effect of introducing an axial modification (parabolic shape) of the cam depth on the levels of film thickness and pressure distribution. This is achieved based on a point contact model for a cam and flat-faced follower system. The results reveal that the cam form of modification has considerable consequences on the level of predicted film thickness and pressure distribution as well as surface deformation. View Full-Text
Keywords: elastohydrodynamic; point contact; cam modification elastohydrodynamic; point contact; cam modification
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Jamali, H.U.; Al-Hamood, A.; Abdullah, O.I.; Senatore, A.; Schlattmann, J. Lubrication Analyses of Cam and Flat-Faced Follower. Lubricants 2019, 7, 31.

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