Abstract
An investigation to observe the morphing capabilities of actuated macro fiber composite patches on multi-curved aircraft surfaces was conducted. Inattentive positioning of these patches can reduce desired surface deflection and mitigate aerodynamic performance. An initial study was performed on a 2-D fiber reinforced airfoil to observe the morphology of the cross-section when macro fiber composite patches were actuated in different chordwise positions. This was achieved through iterative finite element analysis using a thermal expansion method analogous to piezoelectric effects. The study was adapted to a complex 3-D wing surface where positioning and fiber orientation were considered. The kinematic performance was evidently affected for multi-curved versus more curvy-linear structures, where reduced surface curvature was favorable for more trailing edge deflection. In addition, effects of non-linearity of piezoceramic composites were observed in tandem on these complex surfaces using digital image correlation. Hysteresis and creep effects by virtue displayed kinematic behavior as a function of time and structural geometry. For a multi-curved wing, the residual strain due to hysteresis and creep were less apparent than for a reduced multi-curved surface.
| Original language | English |
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| Title of host publication | Mechanics of Composite, Hybrid and Multifunctional Materials - Proceedings of the 2020 Annual Conference on Experimental and Applied Mechanics |
| Editors | Raman P. Singh, Vijay Chalivendra |
| Publisher | Springer |
| Pages | 99-106 |
| Number of pages | 8 |
| ISBN (Print) | 9783030598679 |
| DOIs | |
| State | Published - 2021 |
| Externally published | Yes |
| Event | SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2020 - Orlando, United States Duration: Sep 14 2020 → Sep 17 2020 |
Publication series
| Name | Conference Proceedings of the Society for Experimental Mechanics Series |
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| ISSN (Print) | 2191-5644 |
| ISSN (Electronic) | 2191-5652 |
Conference
| Conference | SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2020 |
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| Country/Territory | United States |
| City | Orlando |
| Period | 09/14/20 → 09/17/20 |
Funding
The authors would like to thank the STTR program under the Air Force Office of Scientific Research for the funding.
Keywords
- Digital image correlation
- Finite element method
- Macro fiber composite
- Multicurve structure