Fatigue crack shielding in plain bearings under large scale yielding
Fatigue crack shielding in plain bearings under large scale yielding
Multi-layered bearing systems used in the automotive industry show shielding and antishielding effects that reduce or amplify the crack driving force under large-scale yielding conditions. Using finite element analysis, it is shown that shielding in such systems results in path deflection and bifurcation despite the absence of mixed-mode loading. As the crack approaches a stiff layer, the tangential strains measured around a blunted crack tip model show a maximum corresponding to the direction of crack propagation. The distribution of such strains indicates the effect of shielding and the likelihood of the tip to deflect or bifurcate.
The suitability of bi-layer and tri-layer bearing architectures is assessed through crack path and respective crack driving force predictions
crack growth, surface layers, bearing failure, automotive design
648-657
Burke-Veliz, A.
cd93fbba-68f6-45c2-857e-da5f7bb628c2
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
April 2010
Burke-Veliz, A.
cd93fbba-68f6-45c2-857e-da5f7bb628c2
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Burke-Veliz, A., Syngellakis, S. and Reed, P.A.S.
(2010)
Fatigue crack shielding in plain bearings under large scale yielding.
Engineering Failure Analysis, 17 (3), .
(doi:10.1016/j.engfailanal.2009.03.032).
Abstract
Multi-layered bearing systems used in the automotive industry show shielding and antishielding effects that reduce or amplify the crack driving force under large-scale yielding conditions. Using finite element analysis, it is shown that shielding in such systems results in path deflection and bifurcation despite the absence of mixed-mode loading. As the crack approaches a stiff layer, the tangential strains measured around a blunted crack tip model show a maximum corresponding to the direction of crack propagation. The distribution of such strains indicates the effect of shielding and the likelihood of the tip to deflect or bifurcate.
The suitability of bi-layer and tri-layer bearing architectures is assessed through crack path and respective crack driving force predictions
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Submitted date: 18 December 2008
Published date: April 2010
Keywords:
crack growth, surface layers, bearing failure, automotive design
Identifiers
Local EPrints ID: 73402
URI: http://eprints.soton.ac.uk/id/eprint/73402
ISSN: 1350-6307
PURE UUID: 7d531087-6cfa-485e-8ba1-c37e66acd486
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Date deposited: 09 Mar 2010
Last modified: 14 Mar 2024 02:37
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Author:
A. Burke-Veliz
Author:
S. Syngellakis
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