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Research Papers: Elastohydrodynamic Lubrication

Numerical Analysis of Thermoelastohydrodynamic Behavior of Elastomer Radial Lip Seals

[+] Author and Article Information
A. Maoui

Laboratoire de Mécanique des Solides, UMR CNRS 6610, Université de Poitiers, 4 Avenue de Varsovie, F-16021 Angoulême, Franceamaoui@iutang.univ-poitiers.fr

M. Hajjam

Laboratoire de Mécanique des Solides, UMR CNRS 6610, Université de Poitiers, 4 Avenue de Varsovie, F-16021 Angoulême, Francehajjam@iutang.univ-poitiers.fr

D. Bonneau

Laboratoire de Mécanique des Solides, UMR CNRS 6610, Université de Poitiers, 4 Avenue de Varsovie, F-16021 Angoulême, Francedbonneau@iutang.univ-poitiers.fr

J. Tribol 130(2), 021504 (Apr 08, 2008) (9 pages) doi:10.1115/1.2842294 History: Received March 07, 2007; Revised December 12, 2007; Published April 08, 2008

This work is a numerical analysis of the thermal effect on the elastohydrodynamic behavior of elastomer radial lip seals. Two thermal approaches are considered, a local approach that determines the distribution of temperature in the contact zone and a simplified global approach that considers a mean temperature of fluid film. In addition, the thermoelastic behavior of the lip surface is taken into account with a relationship between Young’s modulus and the mean temperature of the lip surface. It is shown that the local temperature of the contact zone increases sensitively according to the shaft speed. Moreover, all operating characteristics such as film thickness and power loss are significantly influenced by the local temperature effect.

Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Schematic diagram of the lip seal

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Figure 2

Schematic domain of the fluid film

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Figure 4

Computational procedure

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Figure 7

Temperature distribution of the lip surface

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Figure 9

Temperature distribution in the middle of the fluid film

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Figure 10

Temperatures of shaft surface and maximal of lip surface versus shaft speed

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Figure 3

Schematic representation of the sealing zone

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Figure 5

Fluid film thickness distribution

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Figure 6

Pressure distribution in the sealing zone

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Figure 8

Radial deformation of the lip surface

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Figure 11

Lubricant temperatures, mean, maximum, and minimum versus shaft speed

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Figure 12

Minimal film thickness versus shaft speed

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Figure 13

Reverse pumping versus shaft speed

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Figure 14

Power loss versus shaft speed

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Figure 15

Fiction torque versus shaft speed

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