Spectral identification of nonlinear multi-degree-of-freedom structural systems with fractional derivative terms based on incomplete non-stationary data

• Published in: Structural safety Vol. 86; p. 101975
• Main Authors: dos Santos, Ketson R.M., Brudastova, Olga, Kougioumtzoglou, Ioannis A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.09.2020; Elsevier BV
• Subjects: Compressive sampling; Degrees of freedom; Fractional derivative; Free surfaces; Frequency dependence; Frequency response functions; Generalized harmonic wavelet; Incomplete data; Nonlinear systems; Parameter identification; Sea states; System identification; Time dependence; Generalized harmonic wavelet; Incomplete data; System identification; Nonlinear systems; Compressive sampling; Fractional derivative

•A spectral identification technique is developed for multi-degree-of-freedom systems.•The technique can address nonlinear systems with fractional derivative terms.•The technique can account for non-stationary data via harmonic wavelets.•The technique can account for incomplete data via a compressiv...