A novel failure criterion based upon forming limit curve for thermoplastic composites

Wang, Z; Zhang, W; Luo, Q; Zheng, G; Li, Q; Sun, G

A novel failure criterion based upon forming limit curve for thermoplastic composites

Wang, Z Zhang, W Luo, Q

Zheng, G Li, Q Sun, G

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Composites Part B: Engineering, 2020, pp. 108320-108320
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Wang, Z
dc.contributor.author	Zhang, W
dc.contributor.author	Luo, Q https://orcid.org/0000-0001-5727-9290
dc.contributor.author	Zheng, G
dc.contributor.author	Li, Q
dc.contributor.author	Sun, G
dc.date.accessioned	2020-10-22T07:37:09Z
dc.date.available	2020-10-22T07:37:09Z
dc.date.issued	2020-01-01
dc.identifier.citation	Composites Part B: Engineering, 2020, pp. 108320-108320
dc.identifier.issn	1359-8368
dc.identifier.uri	http://hdl.handle.net/10453/143478
dc.description.abstract	© 2020 Elsevier Ltd This study aims to explore failure mechanism and failure criteria of carbon fiber reinforced polypropylene (CFRPP) by presenting a novel notch-shaped design of specimens with two different fiber orientations (0/90)4 and (+45/-45)4 subject to stamping process under room temperature. Two forming limit curves/diagrams (FLCs/FLDs) were established based upon the minor strain and major strain, as well as the developed equivalent fiber strain combined with a ratio of minor to major strain (SR), respectively. A novel notch-shaped design enables to minimize the influence of fiber orientation on failure modes and FLC of CFRPP effectively. Not only did the equivalent fiber strain based FLC reflect the failure mode in terms of a certain SR value, but also showed the failure strain on fiber bundles quantitatively. Finite element (FE) models involving the new failure criteria (FLC) were developed on the basis of the experimental results. It was found that such a new FE model is able to better predict the results than those with the conventional maximum strain or maximum stress failure criteria. The difference in failure behaviors among these three failure criteria (i.e. FLC, maximum strain and maximum stress) was compared. The history of failure evolution and potential damage status of typical specimens were further analyzed through the FE model. The results indicated that the new FLC failure criteria can be used for the failure assessment in CFRPP structures. This study is anticipated to provide a guideline for further investigation into failure mechanism and failure criteria of thermoplastic composites under different service conditions.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Composites Part B: Engineering
dc.relation.isbasedon	10.1016/j.compositesb.2020.108320
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering
dc.subject.classification	Materials
dc.title	A novel failure criterion based upon forming limit curve for thermoplastic composites
dc.type	Journal Article
utslib.for	09 Engineering
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 Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-10-22T07:36:28Z
pubs.publication-status	Published

Abstract:

© 2020 Elsevier Ltd This study aims to explore failure mechanism and failure criteria of carbon fiber reinforced polypropylene (CFRPP) by presenting a novel notch-shaped design of specimens with two different fiber orientations (0/90)4 and (+45/-45)4 subject to stamping process under room temperature. Two forming limit curves/diagrams (FLCs/FLDs) were established based upon the minor strain and major strain, as well as the developed equivalent fiber strain combined with a ratio of minor to major strain (SR), respectively. A novel notch-shaped design enables to minimize the influence of fiber orientation on failure modes and FLC of CFRPP effectively. Not only did the equivalent fiber strain based FLC reflect the failure mode in terms of a certain SR value, but also showed the failure strain on fiber bundles quantitatively. Finite element (FE) models involving the new failure criteria (FLC) were developed on the basis of the experimental results. It was found that such a new FE model is able to better predict the results than those with the conventional maximum strain or maximum stress failure criteria. The difference in failure behaviors among these three failure criteria (i.e. FLC, maximum strain and maximum stress) was compared. The history of failure evolution and potential damage status of typical specimens were further analyzed through the FE model. The results indicated that the new FLC failure criteria can be used for the failure assessment in CFRPP structures. This study is anticipated to provide a guideline for further investigation into failure mechanism and failure criteria of thermoplastic composites under different service conditions.

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http://hdl.handle.net/10453/143478