Vibro-Acoustic Simulation of Intake Air Filter Using a Hybrid Modal Physical Coupling SOGEFI Engine System Air and Cooliong

Format:

Conference/Event

Author/Creator:

Le Bourdon, Le Bourdon, author.

Contributor:

Aigrot, Julien

D'Udekem, Diego

Jacqmot, Jonathan

Zhou, Ze

Conference Name:

7th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference (2012-06-13 : Graz, Austria)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

To assess the acoustic performance of modern automotive air filters, both the air-borne engine noise propagating through the interior air of the system (known as "pipe noise") and the structure-borne noise radiated by the shell ("shell noise") should be evaluated. In this paper, these different propagation paths are modeled using the finite element solver Actran on industrial test cases set-up by SOGEFI Air and Cooling Systems.The test-case is designed in such a way that the different propagation paths are assessed separately. First the engine acoustic pulsation that is transmitted through the filter's structure is considered. Second, the noise radiated by the shell excited by mechanical forces at the support location of the filter is evaluated. Finally, the acoustic transmission loss of the filter is predicted.The ingredients of the finite/infinite element models are reviewed in details in the paper. In particular, the recently implemented modal/physical coupling is successfully applied to benefit from an existing modal representation of the structure of the filter. Using this approach, the acoustic CAE engineer does not need to create a new mesh for the structure of the filter and can thus focus on the modeling of the acoustics. The results of the simulation are compared with measurements data

Notes:

Vendor supplied data

Publisher Number:

2012-01-1549

Access Restriction:

Restricted for use by site license