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Entropy 2016, 18(7), 271; doi:10.3390/e18070271

Thermal Characteristic Analysis and Experimental Study of a Spindle-Bearing System

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
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Author to whom correspondence should be addressed.
Academic Editors: Michael M. Khonsari and Kevin H. Knuth
Received: 25 March 2016 / Revised: 25 May 2016 / Accepted: 20 July 2016 / Published: 22 July 2016
(This article belongs to the Special Issue Entropy Application in Tribology)

Abstract

In this paper, a thermo-mechanical coupling analysis model of the spindle-bearing system based on Hertz’s contact theory and a point contact non-Newtonian thermal elastohydrodynamic lubrication (EHL) theory are developed. In this model, the effect of preload, centrifugal force, the gyroscopic moment, and the lubrication state of the spindle-bearing system are considered. According to the heat transfer theory, the mathematical model for the temperature field of the spindle system is developed and the effect of the spindle cooling system on the spindle temperature distribution is analyzed. The theoretical simulations and the experimental results indicate that the bearing preload has great effect on the frictional heat generation; the cooling fluid has great effect on the heat balance of the spindle system. If a steady-state heat balance between the friction heat generation and the cooling system cannot be reached, thermally-induced preload will lead to a further increase of the frictional heat generation and then cause the thermal failure of the spindle. View Full-Text
Keywords: spindle-bearing system; thermo-mechanical coupling model; frictional heat generation; preload; heat transfer; temperature distribution spindle-bearing system; thermo-mechanical coupling model; frictional heat generation; preload; heat transfer; temperature distribution
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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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MDPI and ACS Style

Wu, L.; Tan, Q. Thermal Characteristic Analysis and Experimental Study of a Spindle-Bearing System. Entropy 2016, 18, 271.

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