PREDICTION OF LOW FREQUENCY SOUND PRESSURE DISTRIBUTION INSIDE A VERTICAL PASSENGER COMPARTMENT FROM ITS STRUCTURAL DYNAMIC RESPONSE
This paper describes a study of the mechanism of noise generation by vibrating structures. A theory is developed from the well-established "simple-source" theory for the propagation of sound from a vibrating structure, provided that the vibration profile of the structure is known in detail. Experimental computer-based control and analysis techniques have been developed on an on-line basis to apply the theory developed to vehicle body structures. Some results from a simple box structure and a small sports saloon car structure are presented to illustrate the techniques and demonstrate the level of accuracy achieved by comparing experimental and theoretical results. (Author/TRRL)
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Corporate Authors:
Modino Press Limited
50 Pine Grove
London N2O 8LA, England -
Authors:
- Dunn, J W
- OLATUNBOSUN, O A
- Mills, B
- Publication Date: 1980-9
Media Info
- Features: Figures; References;
- Pagination: p. 11-16
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Serial:
- Society of Environmental Engineers, Journal of
- Volume: 19-3
- Issue Number: 86
- Publisher: Society of Environmental Engineers
Subject/Index Terms
- TRT Terms: Accuracy; Automobiles; Digital computers; Dynamic loads; Evaluation and assessment; Forecasting; Information processing; Low frequency; Mathematical analysis; Motor vehicle bodies; Pressure; Sound; Vehicles; Vibration
- Uncontrolled Terms: Dynamic response; Pressure distribution
- Old TRIS Terms: Automobile bodies
- ITRD Terms: 6471: Analysis (math); 1243: Car; 8673: Digital computer; 9020: Evaluation (assessment); 132: Forecast; 6748: Sound; 1255: Vehicle; 5558: Vibration
- Subject Areas: Highways; Vehicles and Equipment;
Filing Info
- Accession Number: 00334082
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Sep 16 1981 12:00AM