Gyro-elastic beams for the vibration reduction of long fexural systems

Carta G.

First

;Jones I. S.;Movchan N. V.;Movchan A. B.;Nieves M. J.

2017-01-01

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Abstract

The paper presents a model of a chiral multi-structure incorporating gyro-elastic beams. Floquet-Bloch waves in periodic chiral systems are investigated in detail, with the emphasis on localization and the formation of standing waves. It is found that gyricity leads to low-frequency standing modes and generation of stop-bands. A design of an earthquake protection system is offered here, as an interesting application of vibration isolation. Theoretical results are accompanied by numerical simulations in the time-harmonic regime.