Comparing of the analytical investigation with the FEM simulation for minimizing the total radiated sound from a vibrating plate
Publication date
2023-05-31
Document type
Konferenzbeitrag
Author
Hajilou, Mehran
Organisational unit
ISSN
Conference
92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) ; Aachen, Germany ; August 15–19, 2022
Series or journal
Proceedings in applied mathematics and mechanics
Periodical volume
23
Periodical issue
1
Peer-reviewed
✅
Part of the university bibliography
✅
Abstract
A theoretical model comprising Active-Noise-Control (ANC) systems is created to minimize interfering primary sound radiated from a vibrating simply supported plate with the destructive secondary sound radiated from loudspeakers. In this paper, a global noise reduction at low frequencies is achieved with local control of secondary sources while the most previous studies have already focused on a control of the sound pressure field over a large number of distributed microphones. The ANC systems are placed close to the primary noise. An optimal solution which is assigned to each loudspeaker is derived analytically in terms of the estimated active sound intensities in front of the loudspeakers. In addition, the model is investigated with the Finite-Element-Method (FEM). COMSOL Multiphysics is used to simulate the residual sound field by feeding the loudspeakers with the optimal solutions. The analytical results are compared with those results obtained from the FEM simulation. This study proofs the effectiveness of an ANC system and derives the optimal position and the required number of secondary sources to minimize the total radiated sound from a vibrating plate.
Description
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Version
Published version
Access right on openHSU
Metadata only access
Open Access Funding
Wiley (DEAL)