Analytical modelling of pseudo-ductility in angle-ply CFRP laminates with central unidirectional plies
Analytical modelling of pseudo-ductility in angle-ply CFRP laminates with central unidirectional plies
A new analytical modelling method is developed and subsequently used to predict the pseudo-ductile, metal-like stress-strain responses of thin ply CFRP [±θ/0]s laminates. Three combinations of thin ply materials containing standard (235 GPa) and high (540 GPa, 720 GPa, 780 GPa) modulus fibres have been utilised. The modelling method is used to determine the range of ±θ values for each material combination that will exhibit pseudo-ductility. It is shown that a high modulus 0◦ ply and standard modulus ±θ layers can produce considerable pseudo-ductility, via fragmentation of the 0◦ ply and local delaminations at the 0/-θ interfaces. With the use of the various thin ply materials and a range of ±θ angles between 20◦-30◦, the stress-strain response of these laminates can be finely controlled to achieve a desired 'yield' stress plateau, pseudo-ductile strain or laminate strength.
Angle-ply, Pseudo-ductility, Thin ply
Fuller, Jonathan
2ae99fe1-a6cd-4769-a45b-a9ee45a47f0b
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
24 July 2015
Fuller, Jonathan
2ae99fe1-a6cd-4769-a45b-a9ee45a47f0b
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Wisnom, Michael R.
93bec88e-5256-49f2-9869-5ac551e18d7a
Fuller, Jonathan, Jalalvand, Meisam and Wisnom, Michael R.
(2015)
Analytical modelling of pseudo-ductility in angle-ply CFRP laminates with central unidirectional plies.
20th International Conference on Composite Materials, ICCM 2015, , Copenhagen, Denmark.
19 - 24 Jul 2015.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A new analytical modelling method is developed and subsequently used to predict the pseudo-ductile, metal-like stress-strain responses of thin ply CFRP [±θ/0]s laminates. Three combinations of thin ply materials containing standard (235 GPa) and high (540 GPa, 720 GPa, 780 GPa) modulus fibres have been utilised. The modelling method is used to determine the range of ±θ values for each material combination that will exhibit pseudo-ductility. It is shown that a high modulus 0◦ ply and standard modulus ±θ layers can produce considerable pseudo-ductility, via fragmentation of the 0◦ ply and local delaminations at the 0/-θ interfaces. With the use of the various thin ply materials and a range of ±θ angles between 20◦-30◦, the stress-strain response of these laminates can be finely controlled to achieve a desired 'yield' stress plateau, pseudo-ductile strain or laminate strength.
Text
Analytical_Modelling_of_Pseudo-Ductility_paper-3217-1
- Accepted Manuscript
More information
Published date: 24 July 2015
Additional Information:
Funding Information:
This work was funded under the UK Engineering and Physical Sciences Research Council (EPSRC) Programme Grant EP/I02946X/1 on High Performance Ductile Composite Technology in collaboration with Imperial College, London.
Publisher Copyright: © 2015 International Committee on Composite Materials. All rights reserved.
Venue - Dates:
20th International Conference on Composite Materials, ICCM 2015, , Copenhagen, Denmark, 2015-07-19 - 2015-07-24
Keywords:
Angle-ply, Pseudo-ductility, Thin ply
Identifiers
Local EPrints ID: 477808
URI: http://eprints.soton.ac.uk/id/eprint/477808
PURE UUID: 1bdc5b4e-8309-4f22-9afd-375f8138ad4e
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Date deposited: 14 Jun 2023 17:00
Last modified: 18 Mar 2024 03:57
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Contributors
Author:
Jonathan Fuller
Author:
Michael R. Wisnom
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