PANEL ACOUSTIC CONTRIBUTION ANALYSIS BASED ON ACOUSTIC TRANSFER VECTORS

In order to refine the interior vibro-acoustic performance of vehicles, especially in the lower frequency range, it is of interest to make analyses to show the relative significance of different parts of the vehicle structure as they contribute to the interior sound - panel acoustic contribution analysis. The interior field of the vehicle can be modelled with boundary elements, and multi-domain BE methods enable different properties to be applied in some regions, such as the absorbent behaviour of the seats. In order to solve the BE model of the vehicle interior, a new methodology of Acoustic Transfer Vectors (ATVs) has been implemented. This gives much more rapid computation of panel contributions, especially when re-computation is required due to changes in vibration boundary conditions (for different loadcases on the structure) or due to changes in the selected panels (for example, to assess the relative importance of different regions of a structural panel, such as the car roof). The paper explains the principles of the ATV methodology. Details of the implementation of ATVs for use in panel acoustic contribution analysis are then given, and illustrated with some practical examples. (A) For the covering abstract see ITRD E113232.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/980655414
• Corporate Authors:

  CONGRESS SECRETARIAT

  VOORWEG 105-A
  ZOETERMEER,   Netherlands  NG 2715
• Authors:
  • CREMERS, L
  • TOURNOUR, M
  • MCCULLOCH, C F
• Conference:
  • INTER-NOISE 2001 - ABSTRACTS FROM INTERNATIONAL CONGRESS AND EXHIBITION ON NOISE CONTROL ENGINEERING
  • Location: THE HAGUE , Netherlands
  • Date: 2001-8-27 to 2001-8-30
• Publication Date: 2001

Language

• English

Media Info

• Features: References;
• Pagination: p. 2515-20

Subject/Index Terms

• TRT Terms: Conferences; Evaluation and assessment; Heat transfer; Noise; Transfer characteristics; Vector analysis; Vehicle compartments; Vehicle interiors; Vehicles
• ITRD Terms: 8525: Conference; 9020: Evaluation (assessment); 1377: Interior (veh); 2492: Noise; 6731: Transfer (phys); 6493: Vector; 1255: Vehicle
• Subject Areas: Environment; Vehicles and Equipment;

Filing Info

• Accession Number: 00927090
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 9-806554-1-4
• Files: ITRD
• Created Date: Jul 8 2002 12:00AM