Shock and Vibration / 2019 / Article / Fig 19

Research Article

Free-Decay Nonlinear System Identification via Mass-Change Scheme

Figure 19

Nonlinear restoring force of the multistory building. Dashed black line: cubic term; dashed-dotted black line: quadratic term; red line: total force . (a) Overall view. (b) Zoom around the origin.

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