CHARACTERISTICS AND SOURCES OF NOISE AND VIBRATION AND THEIR CONTROL IN MOTOR CARS
A detailed study of the characteristics of noise and vibration in a motor car is described. The predominant frequency regions in which noise levels are high are established. It is shown that the major part of the sound energy lies within the frequency region below 20 hz and is caused mainly by road excitation being transmitted through the wheel and suspension system. The predominant noise in the audible range lies within 30-300 hz frequency band and is produced primarily by body resonances excited by various engine harmonics. The vibrational and acoustical behaviour of the car body at some of these critical frequencies is also discussed. Finally it is shown that by structural modification a substantial noise reduction can be obtained. /Author/TRRL/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0022460X
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Corporate Authors:
Academic Press Incorporated
Berkeley Square House, Berkeley Square
London W1, England -
Authors:
- Jha, S K
- Publication Date: 1976-8-22
Language
- English
Media Info
- Features: Figures; Photos; References;
- Pagination: p. 543-558
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Serial:
- Journal of Sound and Vibration
- Volume: 47
- Issue Number: 4
- Publisher: Elsevier
- ISSN: 0022-460X
- EISSN: 1095-8568
- Serial URL: http://www.sciencedirect.com/science/journal/0022460X
Subject/Index Terms
- TRT Terms: Automobiles; Chassis; Frequency (Electromagnetism); Noise control; Prevention; Properties of materials; Sound; Suspensions; Vibration; Wheels
- ITRD Terms: 1243: Car; 6997: Frequency; 9149: Prevention; 5925: Properties; 6748: Sound; 5558: Vibration
- Subject Areas: Highways; Materials; Safety and Human Factors; Security and Emergencies; Vehicles and Equipment;
Filing Info
- Accession Number: 00147925
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: Analytic
- Files: ITRD, TRIS
- Created Date: Aug 4 1977 12:00AM