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Passive Flutter Suppression using a Nonlinear Tuned Vibration Absorber

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Figure

Figure 1: Subcritical VdPD oscillator with an attached NLTVA. (a) Enlargement of the stable region of the equilibrium point of the VdPD oscillator; (b) transformation of the subcritical Hopf bifurcation into a supercritical Hopf bifurcation;
Figure 2: Stability chart in the µ 1 , µ 2 , γ space for ε = 0.05. The blue surface (a,b) indicates the stability boundary whereas the red surface (b) indicates the boundary of the region with four eigenvalues with positive real parts
Figure 3: Values of (a) δ 0 , (b) δ α 3 and (c) δ β 3 along the stability boundary in the µ 1 , µ 2 , γ space for ε = 0.05
Figure 5: Ratio δ α 3 /δ β 3 as a function of γ for fixed values of µ 2 and ε = 0.05. Dashed blue lines: µ 2 = 0.07, solid black lines: µ 2 = µ 2opt = 0.1091, dash-dotted green lines: µ 2 = 0.12
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