Fatigue crack shielding in plain bearings under large scale yielding
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), 648-657. (doi:10.1016/j.engfailanal.2009.03.032).
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
|Keywords:||crack growth, surface layers, bearing failure, automotive design|
|Subjects:||Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences > Computational Engineering and Design
|Date Deposited:||09 Mar 2010|
|Last Modified:||27 Mar 2014 18:52|
|Contact Email Address:||S.Syngellakis@soton.ac.uk|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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