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- W1992904184 abstract "Several recent results, both numerical and experimental, have indicated that the structural acoustic response of large vibratory systems with complex internal structure is dominated by local response in the midfrequency range. These results have clear implications regarding control strategies for noise control, but also may have a significant impact on the acoustic scattering characteristics of complex structures. In this paper, this phenomena is analyzed theoretically using two disparate models, a conventional stochastic wave scattering model and a new type of model, which treats the system instead as a set of coupled, local resonators. This local model more naturally accommodates the observations concerning the generally localized response but is somewhat more difficult to associate with the geometrical characteristics of the ‘‘base structure’’ than a more conventional elastic wave scattering model. A number of aspects involving the vibration are analyzed and contrasted between the two models; the occurrence of simple, relatively isotropic spreading of energy, increased damping resulting from the internals, increased damping resulting from radiation into the surrounding fluid, and last but not necessarily least, the impact of local resonance behavior." @default.
- W1992904184 created "2016-06-24" @default.
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- W1992904184 date "1997-11-01" @default.
- W1992904184 modified "2023-09-30" @default.
- W1992904184 title "Local modeling of complex elastic structures" @default.
- W1992904184 doi "https://doi.org/10.1121/1.420132" @default.
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