Arbitrary crack propagation in multi-phase materials using the finite volume method

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Title: Arbitrary crack propagation in multi-phase materials using the finite volume method
Authors: Carolan, Declan
Tuković, Željko
Murphy, Neal
et al.
Permanent link: http://hdl.handle.net/10197/4900
Date: Mar-2013
Abstract: An arbitrary crack propagation model using cell-centre nite volume based method is presented. Crack growth in an elastic solid, across an interface perpendicular to the initial crack path and into a second elastic solid is analysed. Crack initiation and the subsequent path of propagation are shown to arise naturally out of the selection of appropriate cohesive parameters. It is shown that the allowable crack propagation path is restricted by the underlying mesh. Results are presented for a number of values of interfacial strength and ratios of elastic properties between the two elastic solids. For higher values of interfacial strength, the crack is shown to propagate straight through the interface, while for lower values of interfacial strength, the crack is shown to change direction and propagate along the interface. It is shown that with careful selection of material and interface parameters it is possible to arrest a propagating crack at the interface. The method represents a useful step towards the prediction of crack propagation in complex structures.
Funding Details: Other funder
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2013 Elsevier
Keywords: Brittle fracture;Cohesive zone model;Finite volume method;OpenFOAM
DOI: 10.1016/j.commatsci.2012.11.049
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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