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Study of the Glass Contribution to the Interior Acoustics of a Car and Related Countermeasures
Technical Paper
2020-01-1585
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
This paper shows that the combination of a glass and passive acoustic treatment manufacturers can bring different benefits and considerably improve the interior acoustics of a vehicle.
Glazing contributes to the design of the vehicle in addition to its primary role, good visibility and safety. From an acoustic point of view, this brings a challenge for the interior comfort. Indeed, glazing has no absorption and classically has an acoustic insulation weakness around its coincident frequency. In most of the cases, these different aspects make glazing one of the main contributors to the sound pressure level in the passenger compartment, and the trend is not one of change.
However, there are possible countermeasures. One of which is the use of laminated glazing with acoustic PVB. This solution allows reducing the loss of insulation performance at the coincidence frequency. The other is the usage of passive interior acoustic trims. When properly positioned and optimized, the latter can be very effective and can tackle the frequency range that poses a problem. Especially since some technologies allow, by their process, to choose between the improvements of insulation or absorption.
The aim of this paper is to understand the impact of the glazing on the interior acoustic for tires excitations. For that study, a measurement campaign together with some simulations models (FE and SEA) have been carried over on a European C-segment vehicle. A ranking of the different contributions is proposed. Then, in a second part, the countermeasures to improve the interior sound pressure level by adding optimized glazing and sound packages are presented.
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Lafont, T., Bouillet, F., Bertolini, C., and Dalzin, F., "Study of the Glass Contribution to the Interior Acoustics of a Car and Related Countermeasures," SAE Technical Paper 2020-01-1585, 2020, https://doi.org/10.4271/2020-01-1585.Data Sets - Support Documents
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References
- Lesueur, C. , “Rayonnement Acoustique des Structures-Viboacoustique, Interaction Fluide-Structure,” Eyrolles, 1988.
- Bhattacharya, M.C., and Crocker, M.J. , “Forced Vibration of a Panel and Radiation of Sound into a Room,” Acustica 22, 1969.
- Bhattacharya, M.C., and Guy, R.W. , “Coincidence Effect with Sound Waves in a Finite Plate,” Journal of Sound and Vibration 18(2):157-169, 1971.
- Wareing, R.R. et al. , “Variations in Measured Sound Transmission Loss due to Sample Size and Construction Parameters,” Applied Acoustics 89, 2015.
- Dijckmans, A. et al. , “A Wave Based Model to Describe the Niche Effect in Sound Transmission Loss Determination of Single and Double Walls,” in ICA, 2010.
- Koval, L.R. , “On Sound Transmission into a Thin Cylindrical Shell under “Flight Conditions”,” Journal of Sound and Vibration 48(2):265-275, 1976.
- Lafont, T., Stelzer, R., D’Amico, R., Kropp, W. et al. , “Modelling Tyre Noise in Finite Element Simulations for Pass-By Noise Predictions,” J Mechanical Engineering Science 233(18), 2019.
- Lafont, T. et al. , “Application of Statistical Energy Analysis on a Car: From the Vehicle Modeling to Parts Targeting,” in Proceedings of Inter Noise, Hamburg, 2016.
- Hauenstein, M. and Delacroix, A. , “Optimisation of Cabin Energy Management and Human Comfort for XEVS,” in Proceeding of the Vehicle Thermal Management Systems Conference and Exhibition-VTMS, vol. 14, 2019.
- Nashif, A.D. et al. , Vibration Damping (Wiley, 1985).