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Radiated sound power of automotive-type panels with dome-shaped indentations
conference contribution
posted on 2011-08-18, 09:21 authored by G. Kumar, Stephen Walsh, Victor V. KrylovThe automotive industry has witnessed a trend in recent years of reducing the bulk weight of a
vehicle in order to achieve economical fuel consumption. Unfortunately, reduced bulk weight
often compromises the noise, vibration and harshness (NVH) characteristics of the vehicle. This
paper investigates the effect of using dome-shaped indentations on a flat panel in order to reduce
the sound radiation whilst keeping the weight of the panel constant. The dimensions and placement
of the dome-shaped indentations are numerically optimized using a genetic algorithm technique so
that the panel radiates minimum sound power in the frequency range of interest. Both numerical and
experimental tests are performed on the optimized panel which is then compared to the radiated
sound power of an equivalent flat panel. Tests were also performed on intuitively placed domes on
the panels. The results illustrate the fluctuation in radiated sound power by varying the number and
location of the dome-shaped indentations. The paper concludes by demonstrating the advantages of a
fast and user-friendly optimization approach to passive noise control problems.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Citation
KUMAR, G., WALSH, S.J. and KRYLOV, V.V., 2011. Radiated sound power of automotive-type panels with dome-shaped indentations. IN: Proceedings of Forum Acusticum, Aalborg, Denmark, 26 June - 1 July, pp. 2383-2386.Publisher
European Acoustics Association (EAA)Version
- VoR (Version of Record)
Publication date
2011Notes
This is a conference paper. It was presented at Forum Acusticum, a triennial European conference on acoustics.ISBN
9788469415207Publisher version
Language
- en