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- W2159521167 abstract "An Acoustic Black Hole (ABH) effect is a passive vibration reduction technique which takes advantage of properties of wave propagation in thin structures of varying thickness. A practical implementation of ABH on a uniform beam consists in an extremity whose thickness follows a power-law profile covered by a very thin layer of additional damping material. A modal analysis based on a High Resolution technique shows that the ABH significantly increases the Modal Overlap Factor (MOF) of the beam, thus reducing the resonant behaviour of the structure. Further investigations, including a two-dimensional numerical model of the structure based on the finite difference method, show that this MOF can be explained by an increase of the modal density and a high damping of a number of modes of the structure due to the ABH." @default.
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- W2159521167 date "2014-06-01" @default.
- W2159521167 modified "2023-10-03" @default.
- W2159521167 title "Modal Overlap Factor of a beam with an acoustic black hole termination" @default.
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- W2159521167 doi "https://doi.org/10.1016/j.jsv.2014.02.005" @default.
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