LMA - Laboratoire de Mécanique et d’Acoustique

M. Miniaci - Bio-inspired elastic metamaterials

Amphithéâtre François Canac, LMA

Le 25 mai 2021 de 11h00 à 12h00

Marco Miniaci / CR IEMN, Lille

Nature has engineered complex designs to achieve advanced properties and functionalities over hundreds of thousands of years, representing a fundamental source of inspiration to solve several mankind’s scientific challenges and engineering problems. For instance, it has been shown that a hierarchical organization over multiple length scales allows enhanced quasi-static mechanical properties, while the relative orientation of adjacent chiral centres strongly affects the physical properties of a polymer, and internal heterogeneous architectures may result in shape changing systems, to cite a few examples.

During this seminar I will discuss how bio-inspiration may be used to enhance the potential of phononic crystals and elastic metamaterials presenting examples of multi-scale, kinematic enriched and tunable metamaterials leading to selective wave dispersion diagram alterations. I will present both numerical and experimental results, as well as discuss the main advantages and limitations of the approaches with respect to conventional metamaterials.

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