Journal article 833 views 204 downloads
Twist morphing of a composite rotor blade using a novel metamaterial
,
Mohammadreza Amoozgar,
Jiaying Zhang ,
Chengyuan Wang ,
Michael Friswell
Composite Structures, Volume: 254, Start page: 112855
Swansea University Authors:
Huaiyuan Gu, Alexander Shaw , Jiaying Zhang , Chengyuan Wang , Michael Friswell
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PDF | Accepted Manuscript
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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DOI (Published version): 10.1016/j.compstruct.2020.112855
Abstract
A novel meta-material has been designed and implemented into a rotor blade to enhance aerodynamic efficiency by achieving a passive twist during rotation. The twist is induced by bend-twist coupling exhibited in the meta-material, which is created to possess anisotropic elastic properties at the bul...
| Published in: | Composite Structures |
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| ISSN: | 0263-8223 |
| Published: |
Elsevier BV
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa55080 |
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| Abstract: |
A novel meta-material has been designed and implemented into a rotor blade to enhance aerodynamic efficiency by achieving a passive twist during rotation. The twist is induced by bend-twist coupling exhibited in the meta-material, which is created to possess anisotropic elastic properties at the bulk level. A concept design of a rectangular blade spar is proposed where the metamaterial is used as the core material to induce twist. Using finite element analysis(FEA) we demonstrate how the bend-twist property of the blade spar is governed by cell geometries of the core material. The twist is activated by a lagwise bending moment generated from a movable mass at the blade tip due to off-centre centrifugal forces. The relationship between the twist, mass location and rotational speed has been explored. Moreover, it was found that the bend-twist property achieved by the proposed blade spar is more effective compared to that of an anisotropic thin-walled composite beam. |
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| Keywords: |
Metamaterial, Composite rotor blade, Twist morphing, Bend-twist coupling, FE analysis |
| College: |
Faculty of Science and Engineering |
| Start Page: |
112855 |