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Finite element modelling of brittle fracture of thick coatings under normal and tangential loading

Leen, Sean B.
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Publication Date
2012-09-12
Keywords
Brittle fracture, Coating, Finite element model
Type
Article
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Citation
Mohd Tobi, A, Shipway, PH, Leen, SB (2013) 'Finite element modelling of brittle fracture of thick coatings under normal and tangential loading'. Tribology International, 58 .
Abstract
This paper addresses coating fracture in hard brittle coatings subjected to combined normal and tangential loads through a finite element based methodology. The coating is modelled as an elastic layer perfectly bonded to an elastic substrate with a pre-microcrack, assumed to initiate at the contact trailing edge due to high tensile stress. The predicted results are consistent with previously published coating fracture results. The model predicts a significant effect of coating thickness on crack propagation for coatings with large elastic mismatch and the final propagated crack profile is predicted to depend on friction coefficient, coating fracture toughness and sliding displacement.
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Publisher
Elsevier ScienceDirect
Publisher DOI
10.1016/j.triboint.2012.08.024
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Attribution-NonCommercial-NoDerivs 3.0 Ireland
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Mechanical Engineering (Scholarly Articles)