Fracture modeling of brittle biomaterials by the phase-field method

Wu, C; Fang, J; Zhang, Z; Entezari, A; Sun, G; Swain, MV; Li, Q

Fracture modeling of brittle biomaterials by the phase-field method

Wu, C Fang, J

Zhang, Z Entezari, A Sun, G Swain, MV Li, Q

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Publication Type:: Journal Article
Citation:: Engineering Fracture Mechanics, 2020, 224
Issue Date:: 2020-02-01

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Field	Value	Language
dc.contributor.author	Wu, C	en_US
dc.contributor.author	Fang, J https://orcid.org/0000-0003-0119-6108	en_US
dc.contributor.author	Zhang, Z	en_US
dc.contributor.author	Entezari, A	en_US
dc.contributor.author	Sun, G	en_US
dc.contributor.author	Swain, MV	en_US
dc.contributor.author	Li, Q	en_US
dc.date.accessioned	2020-03-27T03:13:27Z
dc.date.available	2020-03-27T03:13:27Z
dc.date.issued	2020-02-01	en_US
dc.identifier.citation	Engineering Fracture Mechanics, 2020, 224	en_US
dc.identifier.issn	0013-7944	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139565
dc.description.abstract	© 2019 Elsevier Ltd Biomaterials have been extensively used in prosthetic applications for their proven biocompatibility and osseointegration characteristics. Nevertheless, one of the critical issues of some synthetic biomaterials is brittleness prone to experience fracture failure due to low tensile strength and low fracture toughness. This study aims to employ a recently-developed phase-field model to simulate the crack propagation in brittle biomaterials. Unlike discrete fracture modeling methods, the phase-field approach allows simulating crack path in a continuous manner, thereby avoiding remeshing that may not be trivial for complicated fracture surfaces and facilitate iterative procedure commonly required for structural optimization. The phase-field model is formulated to treat the fracture path as a localized region of diffusive damage that can be described in terms of a phase-field function, in which the discreteness in cracked materials is assumed to be smeared. In this study, three representative case studies from the biomedical context, namely a zirconia-based dental bridge (or namely fixed partial denture (FPD)), a ceramic tissue scaffold and an analog saw-bone femur, are employed as illustrative examples. The phase-field modeling results are compared with the in-house experimental tests, demonstrating the effectiveness of the phase-field technique for predicting brittle fracture failure in several typical biomedical case scenarios. The phase-field model provides a useful tool for the computational fracture analysis and design optimization of other brittle biomaterials.	en_US
dc.relation.ispartof	Engineering Fracture Mechanics	en_US
dc.relation.isbasedon	10.1016/j.engfracmech.2019.106752	en_US
dc.subject.classification	Mechanical Engineering & Transports	en_US
dc.title	Fracture modeling of brittle biomaterials by the phase-field method	en_US
dc.type	Journal Article
utslib.citation.volume	224	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	224	en_US

Abstract:

© 2019 Elsevier Ltd Biomaterials have been extensively used in prosthetic applications for their proven biocompatibility and osseointegration characteristics. Nevertheless, one of the critical issues of some synthetic biomaterials is brittleness prone to experience fracture failure due to low tensile strength and low fracture toughness. This study aims to employ a recently-developed phase-field model to simulate the crack propagation in brittle biomaterials. Unlike discrete fracture modeling methods, the phase-field approach allows simulating crack path in a continuous manner, thereby avoiding remeshing that may not be trivial for complicated fracture surfaces and facilitate iterative procedure commonly required for structural optimization. The phase-field model is formulated to treat the fracture path as a localized region of diffusive damage that can be described in terms of a phase-field function, in which the discreteness in cracked materials is assumed to be smeared. In this study, three representative case studies from the biomedical context, namely a zirconia-based dental bridge (or namely fixed partial denture (FPD)), a ceramic tissue scaffold and an analog saw-bone femur, are employed as illustrative examples. The phase-field modeling results are compared with the in-house experimental tests, demonstrating the effectiveness of the phase-field technique for predicting brittle fracture failure in several typical biomedical case scenarios. The phase-field model provides a useful tool for the computational fracture analysis and design optimization of other brittle biomaterials.

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http://hdl.handle.net/10453/139565