Phase field fracture model for additively manufactured metallic materials

Li, C; Fang, J; Wan, Y; Qiu, N; Steven, G; Li, Q

Phase field fracture model for additively manufactured metallic materials

Li, C

Fang, J

Wan, Y Qiu, N Steven, G Li, Q

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: International Journal of Mechanical Sciences, 2023, 251
Issue Date:: 2023-08-01

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Field	Value	Language
dc.contributor.author	Li, C https://orcid.org/0000-0002-5514-6635
dc.contributor.author	Fang, J https://orcid.org/0000-0003-0119-6108
dc.contributor.author	Wan, Y
dc.contributor.author	Qiu, N
dc.contributor.author	Steven, G
dc.contributor.author	Li, Q
dc.date.accessioned	2024-04-23T05:33:47Z
dc.date.available	2024-04-23T05:33:47Z
dc.date.issued	2023-08-01
dc.identifier.citation	International Journal of Mechanical Sciences, 2023, 251
dc.identifier.issn	0020-7403
dc.identifier.issn	1879-2162
dc.identifier.uri	http://hdl.handle.net/10453/178285
dc.description.abstract	Phase field models have been extensively studied in the analysis of ductile fracture. However, few have been explored to simulate additively manufactured materials and validated by experimental data to date. This study aims to develop a phase field framework for modelling complex mechanical behaviours of laser powder bed fusion printed metallic materials. To consider the laser powder bed fusion induced microstructural orientation, transversely isotropic Hill48 and modified Mohr-Coulomb constitutive models are incorporated here to depict the plastic and fracture behaviours, respectively. Five types of material specimens representing a wide spectrum of stress states are designed to identify the material parameters of plasticity and fracture. Three groups of crack propagation specimens are also tested to demonstrate the capacity of the developed model. The numerical results divulge that, by considering the stress state-dependent crack initiation, the proposed phase field model is able to better reproduce force-displacement responses of all specimens. Remarkably, the complex cracking sequences, including crack initiation, propagation and final rupture, can be properly captured by the proposed phase field model. More importantly, it is necessary to apply a transversely isotropic fracture model to characterise the orientation-dependent fracture behaviour; otherwise, the crack path would be predicted incorrectly, resulting in unacceptable global force-displacement responses. This study offers an effective phase field modelling framework for the sophisticated constitutive characterisation of laser powder bed fusion fabricated metallic materials.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation	http://purl.org/au-research/grants/arc/DP190103752
dc.relation	http://purl.org/au-research/grants/arc/DE210101676
dc.relation.ispartof	International Journal of Mechanical Sciences
dc.relation.isbasedon	10.1016/j.ijmecsci.2023.108324
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0910 Manufacturing Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.subject.classification	40 Engineering
dc.title	Phase field fracture model for additively manufactured metallic materials
dc.type	Journal Article
utslib.citation.volume	251
utslib.for	0905 Civil Engineering
utslib.for	0910 Manufacturing Engineering
utslib.for	0913 Mechanical Engineering
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	*
dc.date.updated	2024-04-23T05:33:44Z
pubs.publication-status	Published
pubs.volume	251

Abstract:

Phase field models have been extensively studied in the analysis of ductile fracture. However, few have been explored to simulate additively manufactured materials and validated by experimental data to date. This study aims to develop a phase field framework for modelling complex mechanical behaviours of laser powder bed fusion printed metallic materials. To consider the laser powder bed fusion induced microstructural orientation, transversely isotropic Hill48 and modified Mohr-Coulomb constitutive models are incorporated here to depict the plastic and fracture behaviours, respectively. Five types of material specimens representing a wide spectrum of stress states are designed to identify the material parameters of plasticity and fracture. Three groups of crack propagation specimens are also tested to demonstrate the capacity of the developed model. The numerical results divulge that, by considering the stress state-dependent crack initiation, the proposed phase field model is able to better reproduce force-displacement responses of all specimens. Remarkably, the complex cracking sequences, including crack initiation, propagation and final rupture, can be properly captured by the proposed phase field model. More importantly, it is necessary to apply a transversely isotropic fracture model to characterise the orientation-dependent fracture behaviour; otherwise, the crack path would be predicted incorrectly, resulting in unacceptable global force-displacement responses. This study offers an effective phase field modelling framework for the sophisticated constitutive characterisation of laser powder bed fusion fabricated metallic materials.

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http://hdl.handle.net/10453/178285