A Steel Solution for a Firewall Using a Hybrid Test/CAE Approach
Date Published: 2009-04-20
Paper Number:2009-01-1547
DOI: 10.4271/2009-01-1547
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, doi:10.4271/2009-01-1547.
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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Product Status: In Stock
See papers presented at SAE World Congress & Exhibition, April 2009, Detroit, MI, USA, Session: CAE Simulation/Test Correlation and Optimization in Automotive Engineering:Vehicle NVH Simulation/Test Correlation and Optimization (Part 2 of 5)
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