Modelling damage in multidirectional laminates subjected to multi-axial loading: ply thickness effects and model assessment
Modelling damage in multidirectional laminates subjected to multi-axial loading: ply thickness effects and model assessment
A meso-scale damage modelling framework for composite laminates is assessed against multi-axial experimental data obtained from specimens subjected to combined tension/compression and shear loading using a modified Arcan fixture (MAF). Two laminates made from unidirectional carbon fibre-reinforced epoxy plies of different thickness are considered to investigate the ply thickness effect on the damage behaviour of modified open-hole specimens. Intra-laminar damage is predicted using a continuum damage model combined with a fibre-aligned mesh, while cohesive zones are used to account for inter-laminar damage. The multi-axial open-hole specimen strength is predicted with a mean relative error of 15% across all the investigated lay-up and loading configurations, while the predicted damage maps show encouraging agreement with full-field measurements obtained using digital image correlation (DIC). However, the assessment reveals limitations of the assumption of small strains and rotations in the formulation of the model that lead to spurious model behaviour for shear-dominated damage modes.
Carbon fibre, Damage mechanics, Finite element analysis (FEA), Modified Arcan Fixture (MAF), Multiaxial loading, composite laminates
Laux, Tobias
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Gan, Khong
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Tavares, Rodrigo P.
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Furtado, Carolina
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Arteiro, Albertino
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Camanho, Pedro P.
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Thomsen, Ole
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Dulieu-Barton, J.M.
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15 June 2021
Laux, Tobias
cffe8612-be2f-4fed-a3f9-a87e18099826
Gan, Khong
b0c1e988-d375-4bbc-acdc-c77a6da1f904
Tavares, Rodrigo P.
b91d0116-bb47-4d2d-a02c-7f5df458ac9c
Furtado, Carolina
c76c5f54-d539-42f7-8d2d-55fd32ea43e7
Arteiro, Albertino
dcfdf34b-22d8-429d-8a17-15ee46ef7eeb
Camanho, Pedro P.
c96e1716-188d-43ca-b2a2-ce6b3e2d79e7
Thomsen, Ole
f3e60b22-a09f-4d58-90da-d58e37d68047
Dulieu-Barton, J.M.
865d08ff-9ec0-407c-bb31-0e34356b4809
Laux, Tobias, Gan, Khong, Tavares, Rodrigo P., Furtado, Carolina, Arteiro, Albertino, Camanho, Pedro P., Thomsen, Ole and Dulieu-Barton, J.M.
(2021)
Modelling damage in multidirectional laminates subjected to multi-axial loading: ply thickness effects and model assessment.
Composite Structures, 266, [113766].
(doi:10.1016/j.compstruct.2021.113766).
Abstract
A meso-scale damage modelling framework for composite laminates is assessed against multi-axial experimental data obtained from specimens subjected to combined tension/compression and shear loading using a modified Arcan fixture (MAF). Two laminates made from unidirectional carbon fibre-reinforced epoxy plies of different thickness are considered to investigate the ply thickness effect on the damage behaviour of modified open-hole specimens. Intra-laminar damage is predicted using a continuum damage model combined with a fibre-aligned mesh, while cohesive zones are used to account for inter-laminar damage. The multi-axial open-hole specimen strength is predicted with a mean relative error of 15% across all the investigated lay-up and loading configurations, while the predicted damage maps show encouraging agreement with full-field measurements obtained using digital image correlation (DIC). However, the assessment reveals limitations of the assumption of small strains and rotations in the formulation of the model that lead to spurious model behaviour for shear-dominated damage modes.
Text
Laux et al_ComStr_acceptedMS
- Accepted Manuscript
More information
Accepted/In Press date: 22 February 2021
e-pub ahead of print date: 2 March 2021
Published date: 15 June 2021
Additional Information:
Funding Information:
This work is supported by EPSRC under the Doctoral Training Grant 1801230 and through a Stanley Gray Fellowship granted to the lead author by the Institute of Marine Engineering, Science and Technology (IMarEST).
Publisher Copyright:
© 2021 Elsevier Ltd
Keywords:
Carbon fibre, Damage mechanics, Finite element analysis (FEA), Modified Arcan Fixture (MAF), Multiaxial loading, composite laminates
Identifiers
Local EPrints ID: 447563
URI: http://eprints.soton.ac.uk/id/eprint/447563
ISSN: 0263-8223
PURE UUID: 22e76b64-9f3f-4240-a2ce-b0780640f302
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Date deposited: 16 Mar 2021 17:32
Last modified: 17 Mar 2024 06:24
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Contributors
Author:
Tobias Laux
Author:
Rodrigo P. Tavares
Author:
Carolina Furtado
Author:
Albertino Arteiro
Author:
Pedro P. Camanho
Author:
J.M. Dulieu-Barton
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