Mechanical metamaterials

R Craster, S Guenneau, M Kadic… - Reports on Progress in …, 2023 - iopscience.iop.org
Mechanical metamaterials, also known as architected materials, are rationally designed
composites, aiming at elastic behaviors and effective mechanical properties beyond ('meta') …

Pentamode metamaterials with independently tailored bulk modulus and mass density

M Kadic, T Bückmann, R Schittny, P Gumbsch… - Physical Review …, 2014 - APS
We propose a class of linear elastic three-dimensional metamaterials for which the effective
parameters bulk modulus and mass density can be adjusted independently over a large …

Experiments on cloaking in optics, thermodynamics and mechanics

M Kadic, T Bückmann, R Schittny… - … Transactions of the …, 2015 - royalsocietypublishing.org
Spatial coordinate transformations can be used to transform boundaries, material
parameters or discrete lattices. We discuss fundamental constraints in regard to cloaking …

Active mechanical cloaking for unsupervised damage resilience in programmable elastic metamaterials

D Kundu, S Naskar… - Philosophical …, 2024 - royalsocietypublishing.org
Owing to the architected void-filled low-density configurations, metamaterials are prone to
defects during the complex manufacturing process, or damages under operational …

Reduced relaxed micromorphic modeling of harmonically loaded metamaterial plates: investigating boundary effects in finite-size structures

P Demetriou, G Rizzi, A Madeo - Archive of Applied Mechanics, 2024 - Springer
In this paper, we propose an approach for describing wave propagation in finite-size
microstructured metamaterials using a reduced relaxed micromorphic model. This method …

Antiplane elastic wave cloaking using metamaterials, homogenization and hyperelasticity

WJ Parnell, T Shearer - Wave Motion, 2013 - Elsevier
We consider the problem of how to cloak objects from antiplane elastic waves using two
alternative techniques. The first is the use of a layered metamaterial in the spirit of the work …

[HTML][HTML] Bounds on Herglotz functions and fundamental limits of broadband passive quasistatic cloaking

M Cassier, GW Milton - Journal of Mathematical Physics, 2017 - pubs.aip.org
Using a sum rule, we derive new bounds on Herglotz functions that generalize those given
in Bernland et al.[J. Phys. A: Math. Theor. 44 (14), 145205 (2011)] and Gustafsson and …

Active cloaking of inclusions for flexural waves in thin elastic plates

J O'Neill, Ö Selsil, RC McPhedran… - … Quarterly Journal of …, 2015 - academic.oup.com
We present a new method to create an active cloak for a single clamped inclusion in a
Kirchhoff plate in the presence of flexural waves. In order to cloak this inclusion, we place …

Multi-element metamaterial's design through the relaxed micromorphic model

LA Perez Ramirez, G Rizzi, A Madeo - … : dedicated to the 60th birthday of …, 2023 - Springer
Exploring the dynamical response of mechanical metamaterials has gathered increasing
attention in the last decades, enabling the design of microstructures exotically interacting …

Active noise cloaking of 2D cylindrical shells

D Eggler, H Chung, F Montiel, J Pan, N Kessissoglou - Wave Motion, 2019 - Elsevier
Active noise cloaking of rigid and elastic 2D cylindrical shells in an infinite acoustic medium
is presented. The control approach utilises control sources or forces and discrete error …