The University of Southampton
University of Southampton Institutional Repository

Explicit fracture modelling of cemented tungsten carbide (WC-Co) at the mesoscale

Explicit fracture modelling of cemented tungsten carbide (WC-Co) at the mesoscale
Explicit fracture modelling of cemented tungsten carbide (WC-Co) at the mesoscale
Using Y-Geo software, the combined finite-discrete element method (FDEM) has been used for the first time to simulate fracture explicitly of cemented tungsten carbide (WC-Co). Although originally designed for geomechanical applications, this study has investigated the use of this numerical approach to model WC-Co material at the mesoscale. The composite material is modelled as a heterogeneous structure using fundamental mechanical properties of the respective phases. A series of simulations are validated against both analytical solutions and experimental observations; these cover both elastic and fracture behaviour of the model. Results show good agreement with both analytical stress distribution solutions and experimental fracture path results. For the first time the discrete fracture process, which has previously been described from experimental images, has been replicated by simulation. The study shows the potential of using the finite-discrete element method as a tool for studying fracture of WC Co, although the paper also highlights areas of understanding that needs to be improved to achieve a robust model. Ultimately by being able to model fracture behaviour accurately, this would enable a systematic study of microstructural variables in isolation to optimise composition to improve fracture toughness, something which is difficult to do experimentally.
finite element analysis, finite-discrete element method, fracture mechanics, modelling, ceramics, grains and interfaces
0921-5093
373-379
Herd, Stephen
1801cfb5-ca4b-414c-97a8-4d2634932fbb
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Higgs III, C F
0ffb214f-e77d-448a-bac3-da4afb5f657e
Herd, Stephen
1801cfb5-ca4b-414c-97a8-4d2634932fbb
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Higgs III, C F
0ffb214f-e77d-448a-bac3-da4afb5f657e

Herd, Stephen, Wood, Robert, Wharton, Julian and Higgs III, C F (2018) Explicit fracture modelling of cemented tungsten carbide (WC-Co) at the mesoscale. Materials Science and Engineering: A, 712, 373-379. (doi:10.1016/j.msea.2017.11.109).

Record type: Article

Abstract

Using Y-Geo software, the combined finite-discrete element method (FDEM) has been used for the first time to simulate fracture explicitly of cemented tungsten carbide (WC-Co). Although originally designed for geomechanical applications, this study has investigated the use of this numerical approach to model WC-Co material at the mesoscale. The composite material is modelled as a heterogeneous structure using fundamental mechanical properties of the respective phases. A series of simulations are validated against both analytical solutions and experimental observations; these cover both elastic and fracture behaviour of the model. Results show good agreement with both analytical stress distribution solutions and experimental fracture path results. For the first time the discrete fracture process, which has previously been described from experimental images, has been replicated by simulation. The study shows the potential of using the finite-discrete element method as a tool for studying fracture of WC Co, although the paper also highlights areas of understanding that needs to be improved to achieve a robust model. Ultimately by being able to model fracture behaviour accurately, this would enable a systematic study of microstructural variables in isolation to optimise composition to improve fracture toughness, something which is difficult to do experimentally.

Other Explicit fracture modelling of WC-Co at the mesoscale RevB - Accepted Manuscript
Restricted to Repository staff only until 5 December 2018.
Request a copy

More information

Accepted/In Press date: 26 November 2017
e-pub ahead of print date: 15 December 2017
Published date: 17 January 2018
Additional Information: Dataset ID: 82c0de8a-30b1-4467-8688-e2ffb3654ad4; EPSRC grant reference: EP/J001023/1
Keywords: finite element analysis, finite-discrete element method, fracture mechanics, modelling, ceramics, grains and interfaces

Identifiers

Local EPrints ID: 416105
URI: https://eprints.soton.ac.uk/id/eprint/416105
ISSN: 0921-5093
PURE UUID: c2f4c64e-c653-4109-9a80-6e03004db24d
ORCID for Stephen Herd: ORCID iD orcid.org/0000-0001-8587-8741
ORCID for Robert Wood: ORCID iD orcid.org/0000-0003-0681-9239
ORCID for Julian Wharton: ORCID iD orcid.org/0000-0002-3439-017X

Catalogue record

Date deposited: 04 Dec 2017 17:30
Last modified: 02 Mar 2018 19:40

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×