A Bloch-based procedure for dispersion analysis of lattices with periodic time-varying properties

We present a procedure for the systematic estimation of the dispersion properties of linear discrete systems with periodic time-varying coefficients. The approach relies on the analysis of a single unit cell, making use of Bloch theorem along with the application of a harmonic balance methodology ov...

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Veröffentlicht in:	Journal of sound and vibration 2017-10, Vol.406, p.363-377
Hauptverfasser:	Vila, Javier, Pal, Raj Kumar, Ruzzene, Massimo, Trainiti, Giuseppe
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic properties Broken time-reversal symmetry Discrete systems Dispersion Dispersion diagram Eigenvalues Elastic media Floquet-Bloch theory Lattices Material properties Mathematical analysis Matrix methods Non-reciprocal wave propagation Plane waves Propagation Stiffness modulation Superlattices Wave dispersion Wave propagation Wavelengths
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