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TECHNICAL PAPERS

Modeling of Fretting Wear Under Gross Slip and Partial Slip Conditions

[+] Author and Article Information
L. Gallego

LaMCoS, INSA-Lyon, CNRS UMR5259, Villeurbanne F69621, France

D. Nélias

LaMCoS, INSA-Lyon, CNRS UMR5259, Villeurbanne F69621, Francedaniel.nelias@insa-lyon.fr

J. Tribol 129(3), 528-535 (Feb 02, 2007) (8 pages) doi:10.1115/1.2736436 History: Received October 17, 2006; Revised February 02, 2007

The paper presents a numerical model to investigate fretting wear either under partial or gross slip conditions. An efficient three-dimensional elastic–static contact model to solve both the normal contact problem and the tangential contact problem is presented. The contact model is validated with analytical solutions for a sphere on flat geometry. A wear law issued from the literature and based on the friction energy is used to simulate surface wear. Numerical friction logs are obtained and the wear rate evolution is found to be highly dependent on the tangential displacement.

Copyright © 2007 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Fretting test load path

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Figure 2

Partial slip (a) and gross slip (b) fretting loops

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Figure 4

Tangential contact

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Figure 5

Normal and tangential load path

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Figure 6

Sphere on plane fretting loop

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Figure 7

Sphere on plane surface stress distribution

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Figure 8

Sphere on plane slip distribution

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Figure 9

Constant normal load fretting log

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Figure 10

Constant normal displacement fretting log

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Figure 11

Theoretical distribution of cumulated absolute slip during one cycle

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Figure 12

Wear distribution after Nend cycles

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Figure 14

Distributions of cumulative absolute slip on the initial and worn geometry during one cycle

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Figure 15

Pressure distributions on the initial and worn geometry

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Figure 17

Wear distribution indicator

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Figure 18

Wear volume versus δx

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Figure 19

Partial slip fretting simulation

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Figure 20

Partial slip fretting wear scars

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Figure 21

Contact traction and slip distributions

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Figure 22

Ratio between the energy dissipated by friction and the total energy as schematically presented in Fig. 2

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