Electrical analogs of curved beams and application to piezoelectric network damping

Robin Darleux (1) , Boris Lossouarn (1) , Ivan Giorgio (2, 3) , Francesco Dell’isola (2, 3) , Jean-François Deü (1)

1 LMSSC - Laboratoire de Mécanique des Structures et des Systèmes Couplés
2 MEMOCS - International Research Center for the Mathematics & Mechanics of Complex Systems
3 UNIVAQ - Università degli Studi dell'Aquila = University of L'Aquila

In this paper, the method of electric analog synthesis is applied to design a piezo-electro-mechanical arch able to show the capacity of multimodal damping. An electric-analog circuit is designed by using a finite number of lumped elements representing the equivalent of a curved beam. Spatial and frequency coherence conditions are proven to be verified for the modes to be damped: in fact, lumped-element circuit can damp only a finite number of vibration modes. Analogous boundary conditions are ensured, so that natural frequencies and mode shapes of both the curved beam and the analog circuit are equal. The instance considered here is the vibration mitigation of a piezo-electro-mechanical arch. Having a view towards prototypical applications, all simulations consider values of physically feasible passive circuital elements. It is believed that the present results may represent a step towards the design of multi-physics metamaterials based on micro-structures exploiting the principle of multimodal damping.

Mots clés: multimodal damping; vibration mitigation; piezoelectric coupling; lumped-element model; electromechanical analogy

Domaines: Mécanique des matériaux [physics.class-ph]

Robin Darleux, Boris Lossouarn, Ivan Giorgio, Francesco Dell’isola, Jean-François Deü. Electrical analogs of curved beams and application to piezoelectric network damping. Mathematics and Mechanics of Solids, 2022, 27 (4), pp.578-601. ⟨10.1177/10812865211027622⟩. ⟨hal-03427357⟩