Subtle features of delamination in cross-ply laminates due to low speed impact
Subtle features of delamination in cross-ply laminates due to low speed impact
In cross-ply laminates, the shape of delamination areas, which form due to low velocity impact, have two subtle features, which have been observed consistently in numerous experiments. Those are the pointed delamination tips and the intact zone between the lobes of delamination. However, there have not been any account available in the literature how they can be consistently captured through numerical modelling, and hence these features in published modelling results were often absent. It is the objective of this paper to identify the underlying modelling considerations so that these features can be captured with confidence. A key and unique reason has been identified in each case. Namely, inclusion of intra-laminar damage allows to reproduce the pointed delamination tips, while the gap between the lobes of delamination can be captured by models with sufficiently refined mesh, where friction between the laminas is taken into account. The capability of capturing these subtle features helps to raise the level of fidelity on the simulation of delamination due to impact.
Damage mechanics, Delamination, Friction, Laminate, Matrix cracking
149-158
Sitnikova, Elena
e0c2f901-24fe-43d0-88e8-76f415675104
Li, Shuguang
f99c53b3-e42e-456f-97df-4c4e06de4a40
Li, Dafei
3adf5f18-f3bf-4a16-926d-feffba4a1bef
Yi, Xiaosu
944e79ff-4c49-4e3e-aca5-b8d0dcb6de2d
8 September 2017
Sitnikova, Elena
e0c2f901-24fe-43d0-88e8-76f415675104
Li, Shuguang
f99c53b3-e42e-456f-97df-4c4e06de4a40
Li, Dafei
3adf5f18-f3bf-4a16-926d-feffba4a1bef
Yi, Xiaosu
944e79ff-4c49-4e3e-aca5-b8d0dcb6de2d
Sitnikova, Elena, Li, Shuguang, Li, Dafei and Yi, Xiaosu
(2017)
Subtle features of delamination in cross-ply laminates due to low speed impact.
Composites Science and Technology, 149, .
(doi:10.1016/j.compscitech.2017.06.021).
Abstract
In cross-ply laminates, the shape of delamination areas, which form due to low velocity impact, have two subtle features, which have been observed consistently in numerous experiments. Those are the pointed delamination tips and the intact zone between the lobes of delamination. However, there have not been any account available in the literature how they can be consistently captured through numerical modelling, and hence these features in published modelling results were often absent. It is the objective of this paper to identify the underlying modelling considerations so that these features can be captured with confidence. A key and unique reason has been identified in each case. Namely, inclusion of intra-laminar damage allows to reproduce the pointed delamination tips, while the gap between the lobes of delamination can be captured by models with sufficiently refined mesh, where friction between the laminas is taken into account. The capability of capturing these subtle features helps to raise the level of fidelity on the simulation of delamination due to impact.
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Published date: 8 September 2017
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Publisher Copyright:
© 2017
Keywords:
Damage mechanics, Delamination, Friction, Laminate, Matrix cracking
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Local EPrints ID: 497706
URI: http://eprints.soton.ac.uk/id/eprint/497706
ISSN: 0266-3538
PURE UUID: 2cd99901-8868-4485-b273-765c4999921b
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Date deposited: 29 Jan 2025 18:34
Last modified: 30 Jan 2025 03:32
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Author:
Elena Sitnikova
Author:
Shuguang Li
Author:
Dafei Li
Author:
Xiaosu Yi
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