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Title: Brittle interfacial cracking between two dissimilar elastic layers: part 2-numerical verification
Authors: Harvey, Christopher M.
Wood, Joseph D.
Wang, Simon
Keywords: Bimaterials
Energy release rate
Interfacial fracture
Stress intensity factors
Mixed-mode partition
Orthogonal pure modes
Issue Date: 2015
Publisher: © Elsevier
Citation: HARVEY, C.M., WOOD, J.D. and WANG, S., 2015. Brittle interfacial cracking between two dissimilar elastic layers: part 2-numerical verification. Composite Structures, 134, pp.1087-1094.
Abstract: A thorough program of 2D finite element method (FEM) simulations is carried out parametrically on a bimaterial double cantilever beam (DCB) model in MSC/NASTRAN. The Young's modulus ratio, the Poisson's ratio, the thickness ratio, and the DCB tip loads are varied over their entire practically useful domains for different values of the crack extension size. Extensive comparisons are made between the results of the analytical theory that was developed in Part 1 by Harvey et al. (2015) and FEM results. This paper reports the outcome of these comparisons. The present analytical theory and the supporting mathematical techniques are thoroughly verified. Overall, excellent agreement is observed between the present analytical theory and the FEM results for the crack extension size-dependent energy release rate (ERR) components and the stress intensity factors (SIFs).
Description: This paper was accepted for publication in the journal Composite Structures and the definitive published version is available at http://dx.doi.org/10.1016/j.compstruct.2015.06.079
Version: Accepted for publication
DOI: 10.1016/j.compstruct.2015.06.079
URI: https://dspace.lboro.ac.uk/2134/18652
Publisher Link: http://dx.doi.org/10.1016/j.compstruct.2015.06.079
ISSN: 0263-8223
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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