Abstract
Among different control approaches, the nonlinear energy sink has been proposed as an effective strategy for passive flutter control toward expanding the flight envelope of aircraft. We validate and introduce the capability for coupling the NES within OpenFOAM to simulate and evaluate its usability in controlling transonic flutter. Particular attention is paid to the extent to which variations in the parameters of the sink impact regions of complete and partial suppression. The results show that in the region of complete suppression the nonlinear energy sink may cause the wing to assume a new equilibrium position, in terms of mean value of the oscillations. In the region of partial suppression, the response is dependent on the initial conditions that may lead to multiple pitch and plunge frequencies or potentially a chaotic response.
Original language | English |
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Pages (from-to) | 577-590 |
Number of pages | 14 |
Journal | Nonlinear Dynamics |
Volume | 91 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 2018 |
Keywords
- Nonlinear energy sink
- Passive control
- Transonic flutter