Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Matlack, Kathryn"'
This study investigates a vibroacoustic phononic metamaterial system composed of repeated monolayered membrane-air cavity unit-cells to assess its efficacy in controlling sound waves. Assuming low-frequency axisymmetric modes, the coupled membrane-ca
Externí odkaz:
http://arxiv.org/abs/2408.09660
Autor:
Tempelman, Joshua R., Weidemann, Tobias, Flynn, Eric B., Matlack, Kathryn H., Vakakis, Alexander F.
Clusters of wave-scattering oscillators offer the ability to passively control wave energy in elastic continua. However, designing such clusters to achieve a desired wave energy pattern is a highly nontrivial task. While the forward scattering proble
Externí odkaz:
http://arxiv.org/abs/2402.17816
We propose a method for manipulating wave propagation in phononic lattices by employing local vibro-impact (VI) nonlinearities to \textit{scatter} energy across the underling linear band structure of the lattice, and \textit{transfer} energy from low
Externí odkaz:
http://arxiv.org/abs/2301.05302
The characteristics of topologically protected wave propagation is typically predicted via the band structure of the primitive unit cell, using Berry curvature to predict localized interface or boundary states (as well as their degree of localization
Externí odkaz:
http://arxiv.org/abs/2210.11665
Autor:
Matlack, Kathryn H.
Radiation damage occurs in reactor pressure vessel (RPV) steel, causing microstructural changes such as point defect clusters, interstitial loops, vacancy-solute clusters, and precipitates, that cause material embrittlement. Radiation damage is a cru
Externí odkaz:
http://hdl.handle.net/1853/51965
Autor:
Kim, Changgong, Matlack, Kathryn H.
The acoustic nonlinearity parameter(beta) is sensitive to dislocation parameters, which continuously change during plastic deformation. Dislocation-based damage in structures/components is the source of the failure; thus, beta has been studied as a m
Externí odkaz:
http://arxiv.org/abs/2204.10889
Publikováno v:
In International Journal of Non-Linear Mechanics June 2024 162
Mechanical topological insulators are well understood for linear and weakly nonlinear systems, however traditional analysis methods break down for strongly nonlinear systems since linear methods can not be applied in that case. We study one such syst
Externí odkaz:
http://arxiv.org/abs/2105.08137
Publikováno v:
In Journal of Sound and Vibration 6 January 2024 568
Autor:
Arretche, Ignacio, Matlack, Kathryn H.
Publikováno v:
Phys. Rev. B 102, 134308 (2020)
We introduce the concept of effective phononic crystals, which combine periodicity with varying isotropic material properties to force periodic coefficients in the elastic equations of motion in a non-Cartesian basis. Periodic coefficients allow for
Externí odkaz:
http://arxiv.org/abs/2008.02886