Zobrazeno 1 - 10
of 270
pro vyhledávání: '"Sébastien, Guenneau"'
Publikováno v:
AIP Advances, Vol 13, Iss 8, Pp 085111-085111-7 (2023)
Designing wideband thermal cloaks remains a challenge, especially at high frequencies. We propose an optimization approach for the design of a thermal cloak for an arbitrary object with large thermal conductivity (copper), in a given frequency band a
Externí odkaz:
https://doaj.org/article/4ebf734d4c8a4f48b518fa850b198ed5
Autor:
Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdellah Mir, Younes Achaoui
Publikováno v:
New Journal of Physics, Vol 26, Iss 7, p 073026 (2024)
Advances in material architectures have enabled endowing materials with exotic attributes not commonly available in the conventional realm of mechanical engineering. Twisting, a mechanism whereby metamaterials are used to transform static axial load
Externí odkaz:
https://doaj.org/article/6e38b35e757f4ba29eb18b0b26046329
Autor:
Hicham Mangach, Younes Achaoui, Muamer Kadic, Abdenbi Bouzid, Sébastien Guenneau, Shuwen Zeng
Publikováno v:
New Journal of Physics, Vol 26, Iss 2, p 023053 (2024)
Recently, metamaterials have driven advancements in wave propagation and polarization control. Chiral elastic metamaterials, in particular, have attracted considerable attention due to their distinctive properties, such as acoustical activity and aux
Externí odkaz:
https://doaj.org/article/0139b8fbf3e542539fc4f7f7dbef6a6b
Publikováno v:
AIP Advances, Vol 12, Iss 8, Pp 085303-085303-6 (2022)
Multiple scattering theory is applied to the study of clusters of point-like scatterers attached to a thin elastic plate and arranged in quasi-periodic distributions. Two types of structures are specifically considered: the twisted bilayer and the qu
Externí odkaz:
https://doaj.org/article/f38302229d7c4ffe83ebabf42cb07a56
Autor:
T. Venkatesh Varma, Bogdan Ungureanu, Saikat Sarkar, Richard Craster, Sébastien Guenneau, Stéphane Brûlé
Publikováno v:
Frontiers in Materials, Vol 8 (2021)
Diverting and controlling the impact of elastic vibrations upon an infrastructure is a major challenge for seismic hazard mitigation and for the reduction of machine noise and vehicle vibration in the urban environment. Seismic metamaterials (SMs), w
Externí odkaz:
https://doaj.org/article/b891234efbb147799ba0142cf8b03860
Publikováno v:
Frontiers in Materials, Vol 6 (2019)
We analyse the propagation of airborne pressure waves through a three-dimensional array of rigid coated spheres (shells) in air. When we dig a channel terminated by an air cavity in each rigid shell we observe the appearance of a low frequency stop b
Externí odkaz:
https://doaj.org/article/872fa4736a304f19a17b00073482fedf
Publikováno v:
New Journal of Physics, Vol 23, Iss 7, p 073004 (2021)
For mechanical waves, Willis coupling means a cross-coupling between stress and velocity or between momentum and strain. In contrary to its realization in acoustic and elastic waves, whether Willis coupling exists in water waves, as another kind of m
Externí odkaz:
https://doaj.org/article/358353fd1b4242ca8655add59e382dde
Autor:
Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdellah Mir, Younes Achaoui
In the current work, through a finite element analysis, we demonstrate that a configuration of chiral cells having syndiotactic symmetry provides dual Fano resonances at low frequency. From the phononic dispersion and transmission response, we compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24a157ae9b84c98ea06d8d7dab73c8ae
Publikováno v:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 380
We design sources for the two-dimensional Helmholtz equation that can cloak an object by cancelling out the incident field in a region, without the sources completely surrounding the object to hide. As in previous work for real positive wavenumbers,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20a47c7f9cbf4a7825e63ecca534b925
https://doi.org/10.1098/rsta.2022.0073
https://doi.org/10.1098/rsta.2022.0073
Autor:
Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdenbi Bouzid, Younes Achaoui
Publikováno v:
International Journal of Mechanical Sciences. 254:108411
Recent developments in the engineering of metamaterials have brought forth a myriad of mesmerizing mechanical properties that do not exist in ordinary solids. Among these, twisting metamaterials, acoustical chirality, or Willis coupling are sample-si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e98bb99f7469a4b854561990401387a9
https://doi.org/10.1016/j.ijmecsci.2023.108411
https://doi.org/10.1016/j.ijmecsci.2023.108411