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A Steel Solution for a Firewall Using a Hybrid Test/CAE Approach
Technical Paper
2009-01-1547
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The firewall design of a BMW1 is optimized for interior noise and weight using a Hybrid Interior Noise Synthesis (HINS) approach. This method associates a virtual firewall with a test based body model.
A vibro-acoustic model of the firewall panel, including trim elements and full vehicle boundary conditions, is used for predictions in the 40 Hz - 400 Hz range. The short calculation time of this set-up allows multiple design iterations.
The firewall noise is reduced by 0.9 dB and its mass by 5.1% through structural changes. Crashworthiness is maintained at its initial level using advanced steel processing. The total interior noise shows improvement in the 90 Hz - 140 Hz range.
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Citation
Florentin, J., Durieux, F., Kuriyama, Y., and Yamamoto, T., "A Steel Solution for a Firewall Using a Hybrid Test/CAE Approach," SAE Technical Paper 2009-01-1547, 2009, https://doi.org/10.4271/2009-01-1547.Also In
References
- Vanolo M. Storer D. Van der Auweraer H. Associating the Vibrations of Car Body Panels to the Internal Acoustic Response, Proceedings of ISMA25, Leuven (B) Sept. 11-13 2000
- Thorpe M. Adam H. ULSAB-Advanced Vehicle Concepts-Overview and Design, SAE 2002-01-0036 2002