EXPERIMENTAL AND THEORETICAL STUDY OF THE ROLLING NOISE IN A PASSENGER CAR
Passenger car interior noise generated by road excitation is analyzed. Graphs are presented of road vibration and rolling noise levels produced on a road simulator and those recorded on a test track. Tires, suspension, body, and the acoustic cavity (car interior) are all involved in noise production. The components of the vibrations are depicted in car diagrams for the following symmetric modes: two-node bending mode at 29 Hz, floor mode at 41 Hz, and three-node bending mode at 51 Hz. Calculation of the acoustic response of the passenger compartment using a two-dimensional mathematical model is discussed. The mechanism of noise production by vibration coupling among the different modes is explained, and approaches to noise reduction are suggested.
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
- Presented at SAE Passenger Car Meeting, Dearborn, Michigan, 11-15 June 1979. Pages 3 and 6 are missing.
Warrendale, PA United States 15096
- Beuzit, P
- Fontanet, P
- Garnier, J L
- Publication Date: 1979
- Features: References;
- Pagination: 9 p.
- TRT Terms: Acoustics; Automobiles; Mathematical models; Noise; Noise control; Vibration
- Uncontrolled Terms: Interior; Noise reduction
- Subject Areas: Environment; Safety and Human Factors;
- Accession Number: 00387293
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: SAE 790673, HS-029 336U
- Files: HSL, USDOT
- Created Date: Jul 30 1984 12:00AM