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Nonlinear resonances and antiresonances of a forced sonic vacuum

Author(s): Pozharskiy, D; Zhang, Y; Williams, MO; McFarland, DM; Kevrekidis, PG; et al

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dc.contributor.authorPozharskiy, D-
dc.contributor.authorZhang, Y-
dc.contributor.authorWilliams, MO-
dc.contributor.authorMcFarland, DM-
dc.contributor.authorKevrekidis, PG-
dc.contributor.authorVakakis, AF-
dc.contributor.authorKevrekidis, Yannis G.-
dc.identifier.citationPozharskiy, D, Zhang, Y, Williams, MO, McFarland, DM, Kevrekidis, PG, Vakakis, AF, Kevrekidis, IG. (2015). Nonlinear resonances and antiresonances of a forced sonic vacuum. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 92 (6), 10.1103/PhysRevE.92.063203en_US
dc.description.abstractWe consider a harmonically driven acoustic medium in the form of a (finite length) highly nonlinear granular crystal with an amplitude- and frequency-dependent boundary drive. Despite the absence of a linear spectrum in the system, we identify resonant periodic propagation whereby the crystal responds at integer multiples of the drive period and observe that this can lead to local maxima of transmitted force at its fixed boundary. In addition, we identify and discuss minima of the transmitted force ("antiresonances") between these resonances. Representative one-parameter complex bifurcation diagrams involve period doublings and Neimark-Sacker bifurcations as well as multiple isolas (e.g., of period-3, -4, or -5 solutions entrained by the forcing). We combine them in a more detailed, two-parameter bifurcation diagram describing the stability of such responses to both frequency and amplitude variations of the drive. This picture supports a notion of a (purely) "nonlinear spectrum" in a system which allows no sound wave propagation (due to zero sound speed: the so-called sonic vacuum). We rationalize this behavior in terms of purely nonlinear building blocks: apparent traveling and standing nonlinear waves. © 2015 American Physical Society.en_US
dc.format.extent063203-1 - 063203-8en_US
dc.relation.ispartofPhysical Review E - Statistical, Nonlinear, and Soft Matter Physicsen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleNonlinear resonances and antiresonances of a forced sonic vacuumen_US
dc.typeJournal Articleen_US

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