Investigation of Tire Road Noise with Special Consideration of Airborne Noise Transmission

Koners, Gregor; Lehmann, Ralf

doi:10.4271/2009-01-2109

Cited by 7 publications

(3 citation statements)

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“…The actual values x 1 and x 2 of A and B can be calculated using equation (19). Similarly, for n excitation sources, the modified model equations are where y n is the measured signal of the nth excitation source, and H is the transfer function between the excitation sources.…”

Section: Anti-noise Otpa Modelling For Vehicle Interior Noisementioning

confidence: 99%

“…Medeiros and Guimaraes 18 proposed a TPA model of independent excitation sources to avoid crosstalks between signals from different excitation sources. Koners and Lehmann 19 used TPA to study tyre radiation noise through airborne noise paths. To overcome the drawbacks of traditional TPA, De Klerk and Rixen 20 proposed a component-based TPA and verified the effectiveness of the method experimentally.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

Liu

Sun

Wang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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Owing to the continuous development of the automobile industry, increasingly stringent performance requirements for noise, vibration, and harshness of automobiles are being presented. Interior noise control in high-speed vehicles has not been adequately addressed, owing to the complex mechanism of noise generation. As simulations performed previously focused on vehicle wind noise and tyre noise cannot adequately predict the effect on passenger ear-side noise, these issues are investigated in this study. Their effects on passengers are investigated using transfer path analysis. An anti-noise operational transfer path analysis is proposed to study noise generated in high-speed vehicles. The established anti-noise operational transfer path analysis model can eliminate crosstalks between noise source signals of different transmission paths. The model is validated by comparing the measured and calculated values of the anti-noise operational transfer path analysis model. The coherence of the input noise signal and the ear-side noise signal of the passenger is assessed using coherence analysis. By calculating and categorising the contributions of different noise sources in different locations and types, the main noise sources affecting passenger comfort are determined. The result indicates that the main noise sources affecting the passenger’s ear-side noise change from engine noise to left-A wind noise and tyre radiation noise with increasing vehicle speed, in which the proportion also increase. The proposed anti-noise operational transfer path analysis is suitable for the interior-noise analysis of high-speed vehicles, and this study may serve as a reference for future studies regarding active and passive noise control in high-speed vehicles.

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Section: Anti-noise Otpa Modelling For Vehicle Interior Noisementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

Liu

Sun

Wang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…For the structure-borne transfer path, experimental transfer path analysis (TPA) is a fairly well-established technique [3][4][5][6][7] for the estimation and ranking of individual noise or vibration contributions via the different structural transmission paths from the point-coupled powertrain to the vehicle body. In recent years it has been used in a fuel cell vehicle (FCV) to identify and rank the main structure-borne noise paths.…”

Section: Introductionmentioning

confidence: 99%

Transfer path analysis and control of vehicle structure-borne noise induced by the powertrain

Guo

Qiu

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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Because of the higher requirements for vehicle comfort and people's increasing ecological consciousness, research on the interior noise in a vehicle has received wide concern, among which structure-borne noise is hard to diagnose and control. To solve the problem, the transfer path analysis method of powertrain structure-borne noise has been systematically analysed. By introduction of the powertrain source-path-receiver model, this method enables us to estimate and study the vibro-acoustic transfer functions and their operational forces. Since structure-borne noise is composed of multiple paths, the aim of this paper is to discuss different synthesis methods for this noise. On the basis of previous discussion, the transfer path analysis test of a certain vehicle is carried out, and the transfer function and operational data at idle and second-gear wide-open throttle are obtained. The test data are processed and an acoustic contribution analysis of the target is performed using LMS software. The results of analysis show that the right-hand side mount represents the main contribution path. Then the match principle of the bracket dynamic stiffness of the powertrain isolation system is proposed. On the basis of the transfer path analysis results and the above principle, the bracket on the body side of the right-hand side mount is improved by combination of the experimental transfer path analysis and the finite element method. The test results show that the A-weighted sound pressure level of the interior noise at idle and second-gear wide-open throttle are reduced by 2.9 dB(A) and 4 dB(A) respectively after improvement. Also there is no obvious booming noise at second-gear wide-open throttle. It is expected that this paper can help automotive noise, vibration and harshness engineers to perform trouble shooting and sound design.

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Vehicle Interior Noise Mechanism and Prediction

Wang¹,

Guo²,

Yang³

2022

Vehicle Interior Sound Quality

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Investigation of Tire Road Noise with Special Consideration of Airborne Noise Transmission

Cited by 7 publications

References 0 publications

Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

Transfer path analysis and control of vehicle structure-borne noise induced by the powertrain

Vehicle Interior Noise Mechanism and Prediction

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