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Journal of Vibration Testing and System Dynamics

C. Steve Suh (editor), Pawel Olejnik (editor),

Xianguo Tuo (editor)

Pawel Olejnik (editor)

Lodz University of Technology, Poland


C. Steve Suh (editor)

Texas A&M University, USA


Xiangguo Tuo (editor)

Sichuan University of Science and Engineering, China


On Targeted Energy Transfer and Resonance Captures in the 2D-Wing and Nonlinear Energy Sinks

Journal of Vcibration Testing and System Dynamics 2(4) (2018) 297--306 | DOI:10.5890/JVTSD.2018.12.001

Wenfan Zhang$^{1}$, Jiazhong Zhang$^{1}$, Le Wang$^{1}$, Shaohua Tian$^{2}$

$^{1}$ School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China

$^{2}$ School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China

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Targeted energy transfer, presented in two-dimensional wing coupled with two Nonlinear Energy Sinks (NESs) under freestream, is studied numerically, it is feasible to partially or even completely suppress aeroelastic instability by passively transferring vibration energy from the wing to the NES in a one-way irreversible fashion, and the relationship between the vibration suppression and Targeted Energy Transfer (TET) of the system is analyzed in detail. First, the model of the coupling system, which includes heave and pitch motions, is presented, and the NESs are located at the leading edge and trailing edge (NES1 and NES2) separately. Then, the vibrations suppressed by NESs are also investigated from the viewpoint of energy transfer etc., and the Resonance Captures (RCs) in the nonlinear coupling system are studied using spectrum analysis. Furthermore, the ensuing TET through the modes of wing (Heave and Pitch) and the NESs are discussed in detail. The results show that the NESs could absorb and dissipate a significant portion of energy fed from the flow to the wing, and the NESs could absorb the energy from every single motion of the wing, and the TET and RCs between modes can be more available in the coupling system. Therefore, the TET is more efficient between the wing and NESs, and it leads to the increase of the critical velocity of freestream under which the nonlinear vibration of the wing can be suppressed by NESs effectively.


This work is supported by National Key Fundamental Research Program of China (973 Program, No.2012CB026002), and the National Natural Science Foundation of China (No.51305355).


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