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On the frequency-independence of interior radiation modes using coupled modes theory

Hesse, Christian and Monner, Hans Peter (2018) On the frequency-independence of interior radiation modes using coupled modes theory. INTER-NOISE 2018, 26.-29. Aug. 2018, Chicago, USA.

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Active structural acoustic control systems rely on the exact knowledge of the sound radiation properties. For the sound radiation into cavities these are commonly derived from the uncoupled, rigid-walled cavity modes. There is an ongoing debate about the validity of such an approach, since the velocity continuity along the structure is violated. In this paper the sound radiation properties are evaluated using the coupled acoustic modes, taking into account the real boundary conditions of the structural velocity. With this approach the acoustic energy in the cavity can be estimated at the structural surface and recent activities in the field of active control of interior sound radiation are validated.

Item URL in elib:https://elib.dlr.de/121715/
Document Type:Conference or Workshop Item (Speech)
Title:On the frequency-independence of interior radiation modes using coupled modes theory
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hesse, ChristianChristian.Hesse (at) dlr.dehttps://orcid.org/0000-0002-9456-5277
Monner, Hans PeterHans.Monner (at) dlr.dehttps://orcid.org/0000-0002-5897-2422
Date:August 2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Active control, ASAC, Radiation modes, Fluid-structure interaction
Event Title:INTER-NOISE 2018
Event Location:Chicago, USA
Event Type:international Conference
Event Dates:26.-29. Aug. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Hamburg
Institutes and Institutions:Institute of System Architectures in Aeronautics > Cabin and Payload Systems
Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Hesse, Dr. Christian
Deposited On:24 Sep 2018 07:52
Last Modified:24 Sep 2018 07:52

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