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A novel formulation for radial fretting wear_Application to false brinelling in thrust bearings.docx (3.058Mb)
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Title
A novel formulation for radial fretting wear: Application to false brinelling in thrust bearings
Author
Llavori, InigoMondragon Unibertsitatea
Ulacia, IbaiMondragon Unibertsitatea
Larrañaga Amilibia, Jon ccMondragon Unibertsitatea
Author (from another institution)
Cubillas Álvarez, David
Zurutuza Santa Cruz, Aitor
López Jauregui, Arkaitz
Published Date
2021
Publisher
Elsevier Ltd.
Keywords
contact mechanics
Fretting
Micro-slip
Analytical
Abstract
Radial fretting is defined as the damage caused by the relative motion of a ball under a variable normal load. The conducted experimental tests proved the existence of this damage even in contacting b ... [+]
Radial fretting is defined as the damage caused by the relative motion of a ball under a variable normal load. The conducted experimental tests proved the existence of this damage even in contacting bodies with similar ma-terials and elastic properties; however, the reviewed analytical methods do not predict damage under these conditions, and the numerical methods are time-consuming, especially when the investigation requires the analysis of several loading cases or during large number of cycles. The main objective of this work was to develop a fast analytical method to analyse radial fretting wear. For this purpose, a novel formulation for contact dis-placements under a normal variable load was built and merged to different contact mechanic formulas. For validation purposes, false brinelling in thrust bearings was used as a representative industrial example. The results were compared with a FEM model showing a relative difference under 9% and a massive reduction of the calculation time of more than 30 000 times, moreover experimental tests were carried out, showing a good agreement between the density of friction energy and the obtained fretting damage what endorse the use of this formulation for the analysis of a large number of cycles and loading cases. [-]
URI
https://hdl.handle.net/20.500.11984/5396
Publisher’s version
https://doi.org/10.1016/j.wear.2021.204078
ISSN
0043-1648
Published at
Wear  Vol. 488-489. N. artículo 204078, 2021
Document type
Article
Version
Postprint – Accepted Manuscript
Rights
© 2021 Published by Elsevier B.V
Access
Embargoed Access (until 2024-08-31)
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  • Articles - Engineering [443]

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