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Effect of material anisotropy on the structural response of flexible composite hydrofoils
Citation
Phillips, AW and Nanayakkara, A and Cairns, R and St John, N and Herath, MT and Zarruk, GA and Brandner, PA, Effect of material anisotropy on the structural response of flexible composite hydrofoils, SAMPE Baltimore 2015: Official Event Directory Annual Conference & Exhibition, 18-21 May, Baltimore, MD, United States, pp. 1-14. (2015) [Non Refereed Conference Paper]
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Abstract
This study investigated the influence of material anisotropy on the structural response of two
composite hydrofoil designs. Both designs were of the same hybrid carbon/epoxy and
glass/epoxy construction. The difference in the two designs was in the orientation of the uniaxial
carbon fibre layers, in one hydrofoil the carbon fibres were aligned along the hydrofoil length
(GC00), while in the other hydrofoil the carbon fibres were offset by 30 towards the leading
edge (GC30). The in-air structural response of the hydrofoils was characterised in a static
cantilever loading arrangement. Their response under hydrodynamic loading was characterised
in the Cavitation Research Laboratory water tunnel at the Australian Maritime College. The
cantilever tests showed that changing the carbon fibre orientation dramatically altered the
hydrofoil elastic response but importantly did not adversely impact their structural integrity. The
in-water tests showed that changing the fibre orientation also substantially modified the hydrofoil
hydroelastic behaviour. In particular, GC30 showed delayed stall, altered Reynolds number
dependence, reduced load components as well as showing higher peak lift/drag ratios compared
to GC00. These results were explained by how material anisotropy alters the shape of the
deformed hydrofoil and consequently its hydroelastic response.
Item Details
| Item Type: | Non Refereed Conference Paper |
|---|---|
| Keywords: | composite hydrofoils, material anisotropy, structural response |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Ship and platform structures (incl. maritime hydrodynamics) |
| Objective Division: | Manufacturing |
| Objective Group: | Transport equipment |
| Objective Field: | Nautical equipment |
| UTAS Author: | Zarruk, GA (Dr Gustavo Zarruk Serrano) |
| UTAS Author: | Brandner, PA (Professor Paul Brandner) |
| ID Code: | 103526 |
| Year Published: | 2015 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2015-10-15 |
| Last Modified: | 2015-12-02 |
| Downloads: | 8 View Download Statistics |
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