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Journée SFA / Renault / SNCF
13
Acoustique
&
Techniques n° 44
Conclusion
This study has been the first application of the
microflown® probes in a complete «Vehicle Acoustic
Synthesis Method» with all powertrain operating sources
and without any specific measurement environment,
allowing to speed-up our measurement protocol by four
and making therefore feasible to perform a VASM on a
complete car within two weeks.
The very good simulation-experiment results have
led to the design of an optimized acoustic package
reaching the challenging target of a weight reduction
of 10\%, while maintaining the acoustic performance
and the cost.
An important automatization effort has been done leading
to a comprehensive MATLAB program supporting the
modeling effort from the meshing, to the measurements
and to the poro-elastic and Ray-Tracing simulation up to
3D colormaps post-treatments.
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n
Vehicle Acoustic Synthesis Method 2nd Generation: an effective hybrid simulation tool to implement acoustic lightweight strategies