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Methodology of Road Noise Analysis and Improvement Strategy for Passenger Cars
Technical Paper
2006-01-1094
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Refinement of vehicle interior and exterior noise is becoming more important for occupant comfort and perception of product quality. Recent trends show that modern cars have refined powertrains and as a result other parameters like road and wind noise start dominating.
The objective of current work is to establish a structured methodology for analysis of road noise using fairly established techniques like sound quality analysis, operational deflection shape analysis, modal analysis and transfer path analysis.
The approach includes road noise characterization, identification of frequencies responsible for road noise, estimation and ranking of contribution of individual frequency noise and vibration through different structural transmission paths from wheel - suspension to the vehicle body.
This work also critically examines body modal response, body attach point sensitivities and suspension characteristics.
Based on the above, appropriate modifications to the car have been carried out and evaluated for improving the road noise. Test results demonstrate the effectiveness of modifications, validating the approach and methodology towards improvement of the road noise.
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Citation
Shivle, S. and Arora, G., "Methodology of Road Noise Analysis and Improvement Strategy for Passenger Cars," SAE Technical Paper 2006-01-1094, 2006, https://doi.org/10.4271/2006-01-1094.Also In
References
- Wyckaert K. der Auweraer Van “Operational Analysis, Transfer Path Analysis, Modal Analysis: Tools to understand Road Noise Problems in Cars” SAE 951251
- Transfer Path Analysis: The qualification and quantification of Vibro-acoustic transfer paths LMS international - Application Notes 1995
- Sound Quality Engineering LMS White Paper
- Leuridan J. Use of Principal Component Analysis for correlation analysis between vibration and acoustic signals ISATA 87
- Gu P. Perry Juan J. “Application of Noise Path Analysis Technique to Transient Excitation” SAE 972034