Structural energy flow optimization through adaptive shunted piezoelectric metacomposites

Manuel Collet (1) , Morvan Ouisse (1) , Mohamed Ichchou (2)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes

In this article, a numerical approach for modeling and optimizing two-dimensional smart metacomposites is presented. The proposed methodology is based on the Floquet-Bloch theorem in the context of elastodynamics including distributed shunted piezoelectric patches. The dedicated numerical technique is able to cope with the multimodal wave dispersion behavior over the whole first Brillouin zone for periodically distributed two-dimensional shunted piezomechanical systems. Some indicators allowing the optimization of the shunt impedance for specific performance objectives are presented and applied for illustration purposes on the design of an adaptive metacomposite with specific functionalities. In order to validate the strategy, the designed metacomposite is integrated in a support structure, and a full three dimensional model is derived to illustrate the efficiency of the approach.

Mots clés: distributed shunted piezoelectric patches; adaptive metamaterial; wave propagation optimization

Domaines: Mécanique [physics]

Manuel Collet, Morvan Ouisse, Mohamed Ichchou. Structural energy flow optimization through adaptive shunted piezoelectric metacomposites. Journal of Intelligent Material Systems and Structures, 2012, 23 (15), pp.1661-1677. ⟨10.1177/1045389X12449915⟩. ⟨hal-02300118⟩