Nonlinear Dynamics of a Duffing-Like Negative Stiffness Oscillator: Modeling and Experimental Characterization

Figure 23

Validation of the nonlinear identification in the time domain (a) and frequency domain (b). Black line: measured output; blue line: simulated output; red dots: residual with the measured output spectrum in dB scales (ref. 1 m²/Hz).

(a)

(b)