Abstract
We present a theoretical analysis to relate the rotation pitch angle to the mechanical performance (interlaminar shear property in this case) of laminas mimicking the Bouligand architecture. For a given laminate, there exists an optimal pitch angle which yields the lowest shear stress. Theoretical models are compared against experimental tests carried out on 32-layer helicoidal carbon fibre laminates with pitch angles of 6°, 9.1°, 12°, 25.7° where the 9.1° is the predicted optimal angle. The results show that this particular architecture with a pitch angle of 9.1° indeed attains the highest load-bearing capability and delays any catastrophic delamination. This provides a fundamental basis to the design of helicoidal structures mimicking the Bouligand architecture.
Original language | English |
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Article number | 100602 |
Number of pages | 5 |
Journal | Composites Communications |
Volume | 23 |
Early online date | 26 Dec 2020 |
DOIs | |
Publication status | Published - 1 Feb 2021 |
Keywords
- Bouligand structure
- Composites
- Helicoidal laminates
- Interlaminar shear