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Structural-Acoustic Analysis of Vehicle Body Panel Participation to Interior Acoustic Boom Noise General Motors Company
- Format:
- Conference/Event
- Author/Creator:
- Sung, Sung, author.
- Conference Name:
- SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2011
- Summary:
- A structural-acoustic finite element model of an automotive vehicle is developed and applied to evaluate the effect of structural and acoustic modifications to reduce low-frequency boom' noise in the passenger compartment. The structural-acoustic model is developed from a trimmed body structural model that is coupled with an acoustic model of the passenger compartment and trunk cavities. The interior noise response is computed for shaker excitation loads at the powertrain mount attachment locations on the body. The body panel and modal participation diagrams at the peak response frequencies are evaluated. A polar diagram identifies the dominant body panel contributions to the boom' noise. A modal participation diagram determines the body modes that contribute to the boom' noise. Finally, structural and acoustic modifications are evaluated to determine their effect on reducing the boom' noise and on the overall lower-frequency sound pressure level response
- Notes:
- Vendor supplied data
- Publisher Number:
- 2011-01-0496
- Access Restriction:
- Restricted for use by site license
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