Vibroacoustic Optimization and Implementation of Adaptive Metacomposite Based on Periodically Distributed Shunted Piezoelectric Patches

International audienceIn the last few years, a technological revolution has occurred in the fields of integrated MEMS that offers new opportunities for smartstructures design and optimization. We know today that the mechanical integration of active smart materials, electronics, chipsets and powersupply systems is possible for the next generation of smart composite structures that can be considered as a new class of adaptivemetamaterials. By using integrated distributed set of electromechanical transducers, one can attain new functionalities. In this paper, we presentan application of the Floquet-Bloch theorem in the context of electrodynamics for vibroacoustic power flow optimization by mean of distributed shunted piezoelectric material. The main purpose is to present a numerical approach able to compute the multi-modal wave dispersionscurves into the whole first Brillouin zone for periodically distributed damped 2D mechanical systems. In a second time, we optimize the piezoelectricshunting electrical impedance for controlling energy diffusion into the proposed semi-active distributed set of cells. Particular implantationproblems are also addressed for taking into consideration electromechanical lack of robustness due to electronic coupling and patches electrostatic parasitic behavior