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Benchmarking of strength models for unidirectional composites under longitudinal tension

Benchmarking of strength models for unidirectional composites under longitudinal tension
Benchmarking of strength models for unidirectional composites under longitudinal tension
Several modelling approaches are available in the literature to predict longitudinal tensile failure of fibre–reinforced polymers. However, a systematic, blind and unbiased comparison between the predictions from the different models and against experimental data has never been performed. This paper presents a benchmarking exercise performed for three different models from the literature: (i) an analytical hierarchical scaling law for composite fibre bundles, (ii) direct numerical simulations of composite fibre bundles, and (iii) a multiscale finite–element simulation method. The results show that there are significant discrepancies between the predictions of the different modelling approaches for fibre–break density evolution, cluster formation and ultimate strength, and that each of the three models presents unique advantages over the others. Blind model predictions are also compared against detailed computed–tomography experiments, showing that our understanding of the micromechanics of longitudinal tensile failure of composites needs to be developed further.
Polymer–matrix composites, Fragmentation, Strength, Micro-mechanics
1359-835X
Bunsell, Anthony
1842606a-b76d-43b0-9052-3756c35d2d03
Gorbatikh, Larissa
8fa8ab94-d030-41e0-9817-ea53726a2926
Morton, Hannah
64a64a10-a60d-4028-bcb0-d1d50e3726a4
Pimenta, Soraia
8b185680-85ab-4324-b082-a05c69f7e3c7
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Swolfs, Yentl
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Thionnet, Alain
b67c6220-4097-4653-ac67-94a3fd1ad3bf
Bunsell, Anthony
1842606a-b76d-43b0-9052-3756c35d2d03
Gorbatikh, Larissa
8fa8ab94-d030-41e0-9817-ea53726a2926
Morton, Hannah
64a64a10-a60d-4028-bcb0-d1d50e3726a4
Pimenta, Soraia
8b185680-85ab-4324-b082-a05c69f7e3c7
Sinclair, Ian
6005f6c1-f478-434e-a52d-d310c18ade0d
Spearing, Mark
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Swolfs, Yentl
d346a5b6-6d57-4e5e-b8e1-1b02a73d00eb
Thionnet, Alain
b67c6220-4097-4653-ac67-94a3fd1ad3bf

Bunsell, Anthony, Gorbatikh, Larissa, Morton, Hannah, Pimenta, Soraia, Sinclair, Ian, Spearing, Mark, Swolfs, Yentl and Thionnet, Alain (2018) Benchmarking of strength models for unidirectional composites under longitudinal tension. Composites Part A: Applied Science and Manufacturing. (doi:10.1016/j.compositesa.2018.03.016).

Record type: Article

Abstract

Several modelling approaches are available in the literature to predict longitudinal tensile failure of fibre–reinforced polymers. However, a systematic, blind and unbiased comparison between the predictions from the different models and against experimental data has never been performed. This paper presents a benchmarking exercise performed for three different models from the literature: (i) an analytical hierarchical scaling law for composite fibre bundles, (ii) direct numerical simulations of composite fibre bundles, and (iii) a multiscale finite–element simulation method. The results show that there are significant discrepancies between the predictions of the different modelling approaches for fibre–break density evolution, cluster formation and ultimate strength, and that each of the three models presents unique advantages over the others. Blind model predictions are also compared against detailed computed–tomography experiments, showing that our understanding of the micromechanics of longitudinal tensile failure of composites needs to be developed further.

Text TFE_accepted - Accepted Manuscript
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More information

Accepted/In Press date: 10 March 2018
e-pub ahead of print date: 16 March 2018
Keywords: Polymer–matrix composites, Fragmentation, Strength, Micro-mechanics

Identifiers

Local EPrints ID: 418756
URI: https://eprints.soton.ac.uk/id/eprint/418756
ISSN: 1359-835X
PURE UUID: f03c966e-5ac9-4d72-8a11-a7bf6115597f

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Date deposited: 21 Mar 2018 17:30
Last modified: 07 Aug 2018 16:32

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