Structure Dynamics and Acoustics Research Group
Prediction of sound radiation from vehicle panels and automotive components
In this project, the effects of structural modifications on sound radiation from automotive structures are investigated. For structures with complicated modifications, numerical optimisation is normally used for the analysis.
In this project, numerical optimisation is used to optimise the modes of a structure in order to radiate acoustic energy weakly into the acoustic medium. A simplified car model is used, and the proposed optimisation is applied to one of its door panels.
Firstly, point masses and line stiffeners are used as structural modifications to create weakly radiating modeshapes. Then more commonly used geometrical modifications are used on the door panel.
Two such modifications are studied; swages and domes. The results show a significant reduction in the radiation effciency and sound power radiated by the optimised panels.
- Funding body
- Jaguar Land Rover
- Project duration
- 3 years
- Project team (researchers)
- Mr Andreas Rousounelos
- Industrial collaborators
- Jaguar Land Rover
- Contact
- Dr Stephen Walsh or Professor Victor Krylov
Project outputs / results
- Rousounelos, A., Walsh, S.J. and Krylov, V.V. (2007) Effects of beam-stiffening on the sound power radiated by finite plates, Proceedings of the Institute of Acoustics, 29, Pt 5, 42-49.
- Rousounelos, A., Walsh, S.J. and Krylov, V.V. (2008) Radiation efficiency of finite plates with beam stiffeners, Proceedings of the Institute of Acoustics, 30, Pt 2, 124-131 (ISSN 1478-6095).
- Rousounelos, A., Walsh, S.J. and Krylov, V.V. (2008) 'Radiation Efficiency of Natural Modes of Plates with Beam Stiffeners, Proceedings of the International Conference “Acoustics 08”, Paris, France, June 2008, pp 703-708, [CD-ROM].
- Rousounelos, A., Walsh, S.J., Krylov, V.V. (2009) Weakly radiating structural modes of automotive-type panels, Proceedings of the 16th International Congress on Sound and Vibration, Krakow, Poland, 5-9 July 2009, [CD-ROM].