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...
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/43769/ |
| _version_ | 1848796764611543040 |
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| author | Sitnikova, Elena Li, Shuguang Li, Dafei Yi, Xiaosu |
| author_facet | Sitnikova, Elena Li, Shuguang Li, Dafei Yi, Xiaosu |
| author_sort | Sitnikova, Elena |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T19:53:10Z |
| format | Article |
| id | nottingham-43769 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:53:10Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-437692020-05-04T19:05:22Z https://eprints.nottingham.ac.uk/43769/ Subtle features of delamination in cross-ply laminates due to low speed impact Sitnikova, Elena Li, Shuguang Li, Dafei Yi, Xiaosu 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. Elsevier 2017-09-08 Article PeerReviewed 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 . pp. 149-158. ISSN 0266-3538 Laminate; Delamination; Matrix cracking; Damage mechanics; Friction http://www.sciencedirect.com/science/article/pii/S0266353817305699 doi:10.1016/j.compscitech.2017.06.021 doi:10.1016/j.compscitech.2017.06.021 |
| spellingShingle | Laminate; Delamination; Matrix cracking; Damage mechanics; Friction Sitnikova, Elena Li, Shuguang Li, Dafei Yi, Xiaosu Subtle features of delamination in cross-ply laminates due to low speed impact |
| title | Subtle features of delamination in cross-ply laminates due to low speed impact |
| title_full | Subtle features of delamination in cross-ply laminates due to low speed impact |
| title_fullStr | Subtle features of delamination in cross-ply laminates due to low speed impact |
| title_full_unstemmed | Subtle features of delamination in cross-ply laminates due to low speed impact |
| title_short | Subtle features of delamination in cross-ply laminates due to low speed impact |
| title_sort | subtle features of delamination in cross-ply laminates due to low speed impact |
| topic | Laminate; Delamination; Matrix cracking; Damage mechanics; Friction |
| url | https://eprints.nottingham.ac.uk/43769/ https://eprints.nottingham.ac.uk/43769/ https://eprints.nottingham.ac.uk/43769/ |