Preliminary experimental validation of FEM-MFS approachfor prediction of re-radiated noise
2017
The interest of scientific and technical communities on the re-radiated noise phenomenon is
increasing over the last years. This paper presents an experimental validation of a 3D FEM-MFS
numerical model to predict vibrations and re-radiated noise inside an enclosure. The experimental
work carried out consisted in the excitation of a reduced size acoustic chamber through the
application of an impulse induced by an instrumented hammer. Simultaneously, the structural and
acoustic dynamic responses of the system were monitored by a set of accelerometers and
microphones. The case study was then modeled and the experimental data is compared with the
numerical results, showing that the proposed numerical approach is efficient and accurate.
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