This study introduces an automated topology optimization approach for designing a pentamode metamaterial. We validate the method designing a graded index (GRIN) 2D Luneburg lens for underwater acoustics. This approach ensures each cell meets precise refractive index requirements, maintaining constant impedance to prevent internal reflections and minimizing shear modulus for a fluid-like behavior.

Design of an Acoustic Luneburg Lens via Topology Optimization of Pentamode Lattice

Pozzi, M.;Cominelli, S.;Braghin, F.
2024-01-01

Abstract

This study introduces an automated topology optimization approach for designing a pentamode metamaterial. We validate the method designing a graded index (GRIN) 2D Luneburg lens for underwater acoustics. This approach ensures each cell meets precise refractive index requirements, maintaining constant impedance to prevent internal reflections and minimizing shear modulus for a fluid-like behavior.
2024
Proceedings of the 9th European Congress on Computational Methods in Applied Sciences and Engineering
acoustic lens; GRIN; low frequency homogenization; metamaterial; pentamode; topology optimization
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1285089
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