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Wing-flutter Mitigation by Targeted Energy Transfers Induced by an Essentially Nonlinear Attachment
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lee, Young Seung McFarland, D. Michael Kerschen, G. Vakakis, Alexander F. Bergman, Lawrence A. |
| Copyright Year | 2007 |
| Abstract | The problem to be addressed here is the mitigation of limit cycle oscillations (LCO) in a rigid in-∞ow wing with nonlinear heave and pitch stifinesses in quasi-steady ∞ow, using targeted energy transfer (TET). We show through simulation and Wavelet transforms that LCO formation is a process of resonance capture, with heave response triggering the pitch LCO. With the addition of a lightweight, fully passive attachment { a nonlinear energy sink (NES) { to the wing, we analytically predict three distinct mechanisms for LCO mitigation: repeated suppressed burst-outs, partial and complete suppressions of aeroelastic instability. Subsequent wind-tunnel experiments conducted in the Nonlinear Aeroelastic Test Apparatus (NATA) at Texas A&M University fully support these results. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://orbi.uliege.be/bitstream/2268/22794/1/C37_2007_Palermo_MDP.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
