UNIT CELL RESONATOR NETWORKS FOR ACOUSTIC AND VIBRATION DAMPING

A noise and vibration attenuation panel (2200) for a structure within a propulsion system includes a first plurality of unit cells (2202) and a first plurality of mass elements (2224) disposed within the first plurality of unit cells (2202). The first plurality of unit cells (2202) include a first p...

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Bibliographische Detailangaben
Hauptverfasser:	WINKLER, Julian, MENDOZA, Jeffrey Michael, REIMANN, Craig Aaron, HOMMA, Kenji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	A noise and vibration attenuation panel (2200) for a structure within a propulsion system includes a first plurality of unit cells (2202) and a first plurality of mass elements (2224) disposed within the first plurality of unit cells (2202). The first plurality of unit cells (2202) include a first periodic structure having a first unit cell (2202), a second unit cell (2202), a third unit cell (2202), and a fourth unit cell (2202), each of the first unit cell (2202), the second unit cell (2202), the third unit cell (2202) and the fourth unit cell (2202) including a central body interconnected via a plurality of lateral tubes (2203) extending from the central body, the first periodic structure forming a first lateral layer of unit cells. The noise attenuation panel (2200) can simultaneously control acoustic waves or energy (i.e., via noise attenuation flow paths) and vibration (i.e., via the mass elements (2224)).