2026-04-16T03:19:35Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/53962024-03-04T16:53:14Zcom_20.500.11984_473col_20.500.11984_478

A novel formulation for radial fretting wear: Application to false brinelling in thrust bearings Llavori, Inigo Ulacia, Ibai Larrañaga Amilibia, Jon Cubillas Álvarez, David Zurutuza Santa Cruz, Aitor López Jauregui, Arkaitz contact mechanics Fretting Micro-slip Analytical 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. 2021-10-13T14:05:53Z 2021-10-13T14:05:53Z 2021 http://purl.org/coar/resource_type/c_6501 0043-1648 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=165028 https://hdl.handle.net/20.500.11984/5396 eng © 2021 Published by Elsevier B.V Elsevier Ltd.